Leptospirosis outbreak in Detroit, MI

Bacterial disease outbreak threatens metro Detroit animals
Published: Oct. 27, 2011
EAST LANSING, Mich. — More than 20 cases of the life-threatening bacterial infection leptospirosis have been reported in Detroit-area dogs in the past three weeks, according to Michigan State University’s Diagnostic Center for Population and Animal Health.
Experts at the MSU center, a service unit of the College of Veterinary Medicine, diagnosed the specific strain of the disease, which can cause fatal damage to dogs and can be transmitted to humans.
In most cases, the dogs were not vaccinated against leptospirosis, or they had an uncertain vaccination history. Because this particular type of leptospirosis is associated with contact with rats, stray dogs are typically thought to be at highest risk. Continue reading Leptospirosis outbreak in Detroit, MI

The Current Status of Canine Vaccinations:

Are We Vaccinating Dogs with Too Many Vaccines Too Often?
Cynda Crawford, DVM, PhD
University of Florida

Introduction
Since the 1950’s, veterinary medicine has done an excellent job in educating pet owners on the importance of vaccination. There is no debate over the health benefits that millions of dogs have derived from vaccination against distemper, parvovirus, infectious hepatitis, and rabies. The decrease in number of human, canine, and farm animal cases of rabies in recent years, despite an increasing incidence in wildlife, is largely attributable to vaccination of dogs.1
Vaccination not only protects the individual dog, but also decreases disease prevalence and transmission in the canine population as a whole, even if some of the dogs are not vaccinated. For example, rabies is not effectively transmitted if more than 70 percent of the canine population is vaccinated.1 Continue reading The Current Status of Canine Vaccinations:

FAQs of Vaccines

FAQs VACCINE ISSUES
W. Jean Dodds, DVM
Hemopet/Hemolife
www.hemopet.org

Q. Is there risk of overvaccinating with vaccines not needed for a specific animal ?
A. Yes. Vaccines contain material designed to challenge the immune system of the pet, and so can cause adverse reactions.  They should not be given needlessly, and should be tailered to the pet’s individual needs.

Q. Are the initial series of puppy core vaccines immunosuppressive ?
A. Yes. This period of immuno suppression from MLV canine distemper and hepatitis vaccines coincides with the time of vaccine-induced viremia, from days 3 to 10 after vaccination.

Q. Can smaller doses of vaccines be given to toy dog breeds ?
A. Yes, they can, although some vaccinologists believe that the whole amount should be given because it represents the minimum immunizing dose. My view is that a half dose of vaccines, other than rabies, as required by law, should suffice and would be safer.

Q. Can anesthetized patients be vaccinated ?
A.This is not preferred, because a hypersensitivity reaction  with vomiting and aspiration could occur and anesthetic agents can be immunomodulating.

Q. Is it safe to vaccinate pregnant pets ?
A.  Absolutely not.

Q. Should pets with immunosuppressive diseases such as cancer or autoimmune diseases, or adverse vaccine reactions/ hypersensitibvity receive booster vaccinations  ?
A. No. Vaccination with MLV products should be avoided as the vaccine virus may cause disease; vaccination with killed products may aggravate the immune-mediated disease or be ineffective.  For rabies boosters that are due, local authorities may accept titers instead.

Q. If an animal receives immunosuppressive therapy, how long afterwards can the pet  safely be vaccinated ?
A.  Wait at least 2 weeks.

Q. Should vaccines be given more often that 2 weeks apart even if a different vaccine is being given ?
A. No. The safest and most effective interval is 3-4 weeks apart.

Q.  At what age should the last vaccine dose be given in the puppy and kitten series ?
A. The last dose of vaccine should be given between 14-16 weeks.  Rabies vaccine should preferably be given separately as late as possible under the law (e.g. 20-24 weeks).

Q. Can intranasal Bordetella vaccine be given parenterally ?
A. No. The vaccine can cause a severe local reaction and may even kill the pet.

Q. Will a killed parenteral Bordetella vaccine given intranasally produce immunity ?
A. No.

Q.  Can MLV parenteral vaccines for cats be used intranasally ?
A. Never. Any mucosal (e.g. conjunctival and nasal) contact with these vaccines can cause disease.

Q. Are homeopathic nosodes capable of immunizing pets ?
A. No. There is no scientific documentation that nosodes protect against infectious diseases of pets. The one parvovirus nosode trial conducted years ago did not protect against challenge.

Q. Should disinfectant be used at the vaccine injection site?
A. No. Disinfectants could inactivate a MLV product.

Q. Can vaccines cause autoimmune diseases?
A. Vaccines themselves do not cause these diseases, but they can trigger autoimmune responses followed by disease in genetically predisposed animals, as can any infection, drug, or chemical / toxic exposures etc.

Q. Can a single vaccine dose provide any benefit to the dog or cat? Will it benefit the canine and feline populations?
A. Yes. One dose of a MLV canine or feline core vaccine should provide long term immunity when given to animals at or after 16 weeks of age. Every puppy and kitten 16 weeks of age or older should receive at least one dose of the MLV core vaccines. We need to vaccinate more animals in the population with core vaccines to achieve herd immunity (e.g. 75% or higher, when probably only 50% of dogs and 25% of cats are vaccinated) and thereby prevent epidemic outbreaks.

Q. If an animal receives only the first dose of a vaccine that needs two doses to immunize, will it have immunity ?
A. No. A single dose of a two-dose vaccine like Leptospirosis or feline leukemia vaccine will not provide immunity. The first dose is for priming the immune system. The second for boosting the immunity has to be given within 6 weeks; otherwise the series has to start over again. After those two doses, revaccination with a single dose can be done at any time.

Q. Can maternally derived antibodies (MDA) also block immunity to killed vaccines and prevent active immunization with MLV vaccines ?
A. Yes. MDA can block certain killed vaccines, especially those that require two doses to immunize.  With MLV vaccines, two doses are often recommended, particularly in young animals, to be sure one is given beyond the neutralizing period of MDA.

Q. How long after vaccination does an animal develop immunity that will prevent severe disease when the core vaccines are used?
A. This is dependent on the animal, the vaccine, and the disease.
· The fastest immunity is provided by CDV vaccines — MLV and recombinant canarypox virus vectored. The immune response starts within mins – hrs and provides protection within a day without interference from MDA.
· Immunity to CPV-2 and FPV develops after 3-5 days when an effective ML V vaccine is used. In contrast, killed FPV-2 vaccine often takes 2 – 3 wks or longer to provide protective immunity.
· CAV-2 MLV given parenterally provides immunity against CAV-1 in 5 to 7 days.
· Time from vaccination to immunity is difficult to determine for FCV and FHV-1 because some animals will not develop any immunity.

Q. Can dogs and cats be non-responders and fail to develop an immune response to vaccines  ?
A. Yes. This is a genetic characteristic seen particularly in some breeds or dog families. Boosting them regularly will not produce measurable circulating immunity, but they may be protected against disease by their cell-mediated and secretory immunity.

Q. Are there parvovirus and distemper virus field mutants that are not adequately protected by current MLV vaccines ?
A. No. All the current CPV-2 and CDV vaccines provide protection from all known viral isolates, when tested experimentally as well as in the field. The current CPV-2 and CPV-2b vaccines provide both short and long term protection from challenge by the CPV-2c variant.

Q. Are serum antibody titres useful in determining vaccine immunity?
A. Yes.  They are especially useful for CDV, CPV-2 and CAV-1 in the dog, FPV in the cat, and rabies virus in the cat and dog. Rabies titers, however, are often not acceptable to exempt individual animals from mandated rabies boosters in spite of medical justifcation.  Serum antibody titers are of limited or no value for the other vaccines.

*  Excerpted from : J  Sm An Pract 48, 528 541, 2007.

Immunology vaccines

http://www.msu.edu/~silvar/vax.htm
THE VACCINE
CONTROVERSY
Susan Thorpe Vargas MS, Ph.D.

One of the most controversial issues in veterinary science today concerns puppy vaccinations. What people are questioning is the frequency of vaccination, some safety vs. efficacy concerns and even whether to vaccinate at all. So when you ask your vet when to bring your animal back for its next shot, be aware there is no one correct answer. How often to vaccinate will depend upon quite a few different factors. Some of these considerations include dog’s environment, its breed, the age at which the first shot was given and the interval between shots. Continue reading Immunology vaccines

Dr Dodds recommendations

Changing Vaccine Protocols orig. by W Jean Dodds DVM
W. Jean Dodds, DVM
HEMOPET
938 Stanford Street
Santa Monica, CA 90403
(310) 828-4804;FAX (310) 453-5240
www.hemopet.org; hemopet@hotmail.com

The challenge to produce effective and safe vaccines for the prevalent infectious diseases of humans and animals has become increasingly difficult. In veterinary medicine, evidence implicating vaccines in triggering immune-mediated and other chronic disorders (vaccinosis) is compelling. While some of these problems have been traced to contaminated or poorly attenuated batches of vaccine that revert to virulence, others apparently reflect the host=s genetic predisposition to react adversely upon receiving the single (monovalent) or multiple antigen combo(polyvalent) products given routinely to animals. Animals of certain susceptible breeds or families appear to be at increased risk for severe and lingering adverse reactions to vaccines.

The onset of adverse reactions to conventional vaccinations (or other inciting drugs, chemicals, or infectious agents) can be an immediate hypersensitivity or anaphylactic reaction, or can occur acutely (24-48 hours afterwards), or later on (10-45 days) in a delayed type immune response often caused by immune-complex formation. Typical signs of adverse immune reactions include fever, stiffness, sore joints and abdominal tenderness, susceptibility to infections, central and peripheral nervous system disorders or inflammation, collapse with autoagglutinated red blood cells and jaundice, or generalized pinpoint hemorrhages or bruises.  Liver enzymes may be markedly elevated, and liver or kidney failure may accompany bone marrow suppression.  Furthermore, recent vaccination of genetically susceptible breeds has been associated with transient seizures in puppies and adult dogs, as well as a variety of autoimmune diseases including those affecting the blood, endocrine organs, joints, skin and mucosa, central nervous system, eyes, muscles, liver, kidneys, and bowel. It is postulated that an underlying genetic predisposition to these conditions places other littermates and close relatives at increased risk.

In cats, while adverse vaccine reactions may be less common, aggressive tumors (fibrosarcomas) can occasionally arise at the site of vaccination. A recent study from Italy reported finding similar tumors in dogs at the injection sites of vaccinations (Vascellari et al, 2003). These investigators stated that their “study identified distinct similarities between canine fibrosarcomas from presumed injection sites and feline post-vaccinal fibrosarcomas, suggesting the possibility of the development of post-injection sarcomas not only in cats, but also in dogs”.

Additionally, vaccination of pet and research dogs with polyvalent vaccines containing rabies virus or rabies vaccine alone was shown to induce production of antithyroglobulin autoantibodies, a provocative and important finding with implications for the subsequent development of hypothyroidism (Scott-Moncrieff et al, 2002).

Vaccination also can overwhelm the immunocompromised or even healthy host that is repeatedly challenged with other environmental stimuli and is genetically predisposed to react adversely upon viral exposure. The recently weaned young puppy or kitten entering a new environment is at greater risk here, as its relatively immature immune system can be temporarily or more permanently harmed. Consequences in later life may be the increased susceptibility to chronic debilitating diseases.

As combination vaccines contain antigens other than those of the clinically important infectious disease agents, some may be unnecessary; and their use may increase the risk of adverse reactions. With the exception of  recently introduced mutivalent Leptospira spp. vaccines, the other leptospirosis vaccines afford little protection against the clinically important fields strains of leptospirosis, and the antibodies they elicit typically last only a few months. Other vaccines, such as for Lyme disease, may be advisable only in those geographical areas where the risk of exposure to Borrelia burgdorferi is significant. Annual or biannual revaccination for rabies is required by some states even though most USDA licensed rabies vaccine have a 3-year duration. Thus, the overall risk-benefit ratio of using certain vaccines or multiple antigen vaccines given simultaneously and repeatedly should be reexamined. It must be recognized, however, that we have the luxury of asking such questions today only because the risk of disease has been effectively reduced by the widespread use of vaccination programs.

Given this troublesome situation, what are the experts saying about these issues? In 1995, a landmark review commentary focused the attention of the veterinary profession on the advisability of current vaccine practices. Are we overvaccinating companion animals, and if so, what is the appropriate periodicity of booster vaccines ? Discussion of this provocative topic has generally lead to other questions about the duration of immunity conferred by the currently licensed vaccine components.

In response to questions posed in the first part of this article, veterinary vaccinologists have recommended new protocols for dogs and cats. These include: 1) giving the puppy or kitten vaccine series followed by a booster at one year of age; 2) administering further boosters in a combination vaccine every three years or as split components alternating every other year until; 3) the pet reaches geriatric age, at which time booster vaccination is likely to be unnecessary and may be unadvisable for those with aging or immunologic disorders. In the intervening years between booster vaccinations, and in the case of geriatric pets, circulating humoral immunity can be evaluated by measuring serum vaccine antibody titers as an indication of the presence of immune memory. Titers do not distinguish between immunity generated by vaccination and/or exposure to the disease, although the magnitude of immunity produced just by vaccination is usually lower (see Tables).

Vaccine Titer Testing: Alternative to Annual Booster Vaccination

Reasons for Vaccine Titer Testing *
To determine that animal is protected (suggested by a positive test result).
To identify a susceptible animal (suggested by a negative test result).
To determine whether an individual animal has responded to a vaccine.
To determine whether an individual vaccine is effectively immunizing animals.
_________________________________________________________________
* from: Schultz RD, Ford RB, Olsen J, Scott F. Vet Med, 97: 1-13, 2002 (insert).

Other Alternatives to Current Vaccine Practices
avoid unnecessary vaccines or over-vaccinating.
caution in vaccinating sick or febrile animals.
tailor specific minimal vaccine protocol for dogs/cats breeds or families at risk for adverse reactions.
start vaccination series later (9-10 wks, dog; 8 wks cat) , despite breeder and pet owner concern for infectious disease risk, especially for parvovirus.
alert caregiver to watch puppy/kitten behavior and health after boosters.
avoid revaccination of those with prior adverse event.

Except where vaccination is required by law, all animals, but especially those dogs or close relatives that previously experienced an adverse reaction to vaccination can have serum antibody titers measured annually instead of revaccination. If adequate titers are found, the animal should not need revaccination until some future date. Rechecking antibody titers can be performed annually,  thereafter, or  can be offered as an alternative to pet owners who prefer not to follow the conventional practice of annual boosters. Reliable serologic vaccine titering is available from several university and commercial laboratories and the cost is reasonable (Twark and Dodds, 2000; Lappin et al, 2002; Paul et al, 2003; Moore and Glickman, 2004).

Relatively little has been published about the duration of immunity following vaccination, although new data are beginning to appear for both dogs and cats.

Our study (Twark and Dodds, 2000), evaluated 1441 dogs for CPV antibody titer and 1379 dogs for CDV antibody titer. Of these, 95.1 % were judged to have adequate CPV titers, and nearly all (97.6 %) had adequate CDV titers. Vaccine histories were available for 444 dogs (CPV) and 433 dogs (CDV). Only 43 dogs had been vaccinated within the previous year, with the majority of dogs (268 or 60%) having received a booster vaccination 1-2 years beforehand. On the basis of our data, we concluded that annual revaccination is unnecessary. Similar findings and conclusions have been published recently for dogs in New Zealand (Kyle et al, 2002), and cats (Scott and Geissinger, 1999; Lappin et al, 2002).  Comprehensive studies of the duration of serologic response to five viral vaccine antigens in dogs and three viral vaccine antigens in cats were published by researchers at Pfizer Animal Health ( Mouzin et al, 2004).

When an adequate immune memory has already been established, there is little reason to introduce unnecessary antigen, adjuvant, and preservatives by administering booster vaccines.  By titering tiennially or more often, as needed, one can assess whether a given animals humoral immune response has fallen below levels of adequate immune memory. In that event, an appropriate vaccine booster should be considered.

But, some veterinarians have challenged the validity of using vaccine titer testing to assess the immunologic status of animals against the common, clinically important infectious diseases.

With all due respect, this represents a misunderstanding of what has been called the fallacy of titer testing, because research has shown that once an animals titer stabilizes it is likely to remain constant for many years. Properly immunized animals have sterilizing immunity that not only prevents clinical disease but also prevents infection, and only the presence of antibody can prevent infection. As stated by eminent expert Dr. Ronald Schultz in discussing the value of vaccine titer testing, these tests show that an animal with a positive test has sterilizing immunity and should be protected from infection.  If that animal were vaccinated it would not respond with a significant increase in antibody titer, but may develop a hypersensitivity to vaccine components (e.g. fetal bovine serum). Furthermore, the animal doesn’t need to be revaccinated and should not be revaccinated since the vaccine could cause an adverse reaction (hypersensitivity disorder). You should avoid vaccinating animals that are already protected. It is often said that the antibody level detected is only a snapshot in time”. That’s simply not true; it is more a motion picture that plays for years”.

Therefore, interpreting titers correctly depends upon the disease in question. Some titers must reach a certain level to indicate immunity, but with other agents like those that produce sterile immunity, the presence of any measurable antibody shows protection. The positive titer test result is fairly straightforward, but a negative titer test result is more difficult to interpret, because a negative titer is not the same thing as a zero titer and it doesn’t necessarily mean that animal is unprotected. A negative result usually means the titer has failed to reach the threshold of providing sterile immunity. In sterile immunity, that means a zero titer, not just a low titer. This is an important distinction, because for the clinically important distemper and parvovirus diseases of dogs, and panleukopenia of cats, a negative or zero antibody titer indicates that the animal is not protected against canine parvovirus and may not be protected against canine distemper virus or feline panleukopenia virus. Whereas a low titer may still mean that the animal is protected.

Finally, what does more than a decade of experience with vaccine titer testing reveal ? Published studies in refereed journals show that 90-98% of dogs and cats that have been properly vaccinated develop good measurable antibody titers to the infectious agent measured. In general, serum antibody titers to the corevaccines along with any natural exposures last a minimum of 7-9 years, and likely are present for life. This corresponds with what we see clinically as the number of cases and deaths due to these diseases has decreased in the vaccinated population. So, in contrast to the concerns of some practitioners, using vaccine titer testing as a means to assess vaccine-induced protection will likely result in the animal avoiding needless and unwise booster vaccinations.

Selected References

American Association of Equine Practitioners,Infectious Disease Committee. Guidelines for the vaccination of  horses. Vaccinations for adult horses,2008. www.aaep.org
American Association of Equine Practitioners,  Infectious Disease Committee. Guidelines for the vaccination of horses.  Vaccinations for foals, 2008.www.aaep.org
Carmichael  LE. An annotated  historical account of canine parvovirus. J Vet Med B, Infect Dis Vet Public Health 52:303-311, 2005.
Dodds WJ. Immune-mediated  diseases of the blood. Adv Vet Sci Comp Med 27:163-196, 1983.
Dodds WJ. Estimating disease prevalence with health surveys and genetic screening. Adv Vet Sci Comp Med 39:29-96, 1995.
Dodds WJ. More bumps on the vaccine road. Adv Vet Med 41:715-732, 1999.
Dodds WJ. Vaccination protocols for dogs predisposed to vaccine reactions. J Am An Hosp Assoc 38: 1-4, 2001.
Dodds WJ. Vaccine issues revisited: whats really happening ?Proc Am Hol Vet Med Assoc, Tulsa, OK, 2007, pp 132-140.
Dodds WJ. Complementary and alternative veterinary medicine: the immune system. Clin Tech Sm An Pract 17: 58-63, 2002.
Dodds WJ.  Big shots: vaccination series, Parts 1-3. Equine Wellness Magazine, 2007.
Duval D, Giger U.  Vaccine-associated immune-mediated hemolytic anemia in the dog.  J  Vet  Intern Med 10:290-295, 1996.
Goodman LB, Wagner B, Flaminio MJ et al. Comparison of the efficacy of inactivated combination and modified-live virus vaccines against challenge infection with neuropathogenic equine herpesvirus type 1 (EHV-1).  Vaccine 24:3636-3645, 2006.
Gore TC, Lakshmanan N, Williams  JR, et al. Three-year duration of immunity in cats following vaccination against feline rhinotracheitis virus, feline calicivirus, and feline panleukopenia virus. Vet Therapeutics 7:213-222, 2006.
Hogenesch H, Azcona-Olivera J, Scott-Moncreiff C, et al.  Vaccine-induced autoimmunity in the dog. Adv Vet Med 41: 733-744, 1999.
Hustead  DR, Carpenter T, Sawyer DC, et al. Vaccination issues of concern to practitioners. J Am Vet Med Assoc 214: 1000-1002, 1999.
Kyle AHM, Squires RA, Davies PR. Serologic status and response to vaccination against canine distemper (CDV) and canine parvovirus (CPV) of dogs vaccinated at different intervals. J Sm An Pract, June 2002.
Lappin MR, Andrews J, Simpson D, et al. Use of serologic tests to predict resistance to feline herpesvirus 1, feline calicivirus, and feline parvovirus infection in cats. J Am Vet Med Assoc 220: 38-42, 2002.
Larson LJ, Schultz RD. Effect of vaccination with recombinant canine distemper virus vaccine immediately before exposure under shelter-like conditions .  Vet Therapeutics 7: 113-118, 2006.
Larson LJ, Schultz RD.  Do two current canine parvovirus type 2 and 2b vaccines provide protection against the new type 2c variant? Vet Therapeutics 9: 94-101, 2008.
McGaw DL, Thompson M, Tate, D, et al. Serum distemper virus and parvovirus antibody titers among dogs brought to a veterinary hospital for revaccination. J Am Vet Med Assoc 213: 72-75, 1998.
Moore  GE, Glickman LT. A perspective on vaccine guidelines and titer tests for dogs. J Am Vet Med Assoc 224: 200-203. 2004.
Moore et al, Adverse events diagnosed within three days of vaccine administration in dogs.  J  Am Vet Med Assoc 227:1102–1108, 2005.
Mouzin DE, Lorenzen M J, Haworth, et al. Duration of serologic response to five viral antigens in dogs. J Am Vet Med Assoc 224: 55-60, 2004.
Mouzin DE, Lorenzen M J, Haworth, et al. Duration of serologic response to three viral antigens in cats. J Am Vet Med Assoc 224: 61-66, 2004.
Muller GH, Kirk RW, Scott DW (eds.) In Small Animal Dermatology, WB Saunders, Philadelphia,  2001, pg 751.
Paul MA.Credibility in the face of controversy. Am An Hosp Assoc Trends Magazine XIV(2):19-21,1998.
Paul MA (chair) et al. Report of the AAHA Canine Vaccine Task Force: 2003 canine vaccine guidelines, recommendations, and supporting literature. AAHA, April 2003, 28 pp. Ibid 2006.
Richards JR (chair) et al. The 2006 American Association of Feline Practitioners Feline Vaccine Advisory Report .  J  Am Vet Med Assoc 229:1405-1441, 2006. www.aafponline.org
Reik L Jr: Disseminated vasculomyelinopathy: an immune complex disease. Ann Neurol 7:291-295, 1980.
Schultz  RD.  Current and future canine and feline vaccination programs.  Vet Med 93:233-254, 1998.
Schultz  RD Conklin S. The immune system and vaccines. Comp Cont Educ Pract Vet 20, 5-18.1998.
Schultz  R D Considerations in designing effective and safe vaccination programs for dogs. In: Carmichael LE (editor), Recent Advances in Canine Infectious Diseases. Intern Vet Inform Serv, 2000.  www.ivis.org.
Schultz RD, Ford RB, Olsen J, Scott F. Titer testing and vaccination: a new look at traditional practices. Vet Med, 97: 1-13, 2002 (insert).
Scott FW, Geissinger CM. Long-term immunity in cats vaccinated with an inactivated trivalent vaccine. Am J Vet Res 60: 652-658, 1999.
Scott-Moncrieff JC, Azcona-Olivera J, Glickman NW, et al. Evaluation of antithyroglobulin antibodies after routine vaccination in pet and research dogs. J Am Vet Med Assoc 221: 515-521, 2002.
Smith CA.  Are we vaccinating too much?  J Am Vet Med Assoc  207:421-425, 1995.
Souayah N, et al.  Small fiber neuropathy following vaccination for rabies, varicella, or Lyme disease. Vaccine 10:1016-1120, 2009  [2009.09.077].
Tizard  I, Ni Y.  Use of serologic testing to assess immune status of companion animals. J Am Vet Med Assoc 213: 54-60, 1998.
Twark L, Dodds WJ. Clinical  application of serum parvovirus and distemper virus antibody titers for determining revaccination strategies in healthy dogs. J Am Vet Med Assoc 217:1021-1024, 2000.
Vascellari M, Melchiotti E, Bozza MA et al. Fibrosarcomas at presumed sites of injection in dogs: characteristics and comparison with non-vaccination site fibrosarcomas and feline post-vaccinal firosarcomas.  J Vet Med 50 (6): 286-291, 2003.
Wilcock BP, Yager JA.Focal cutaneous vasculitis and alopecia at sites of rabies vaccination in dogs.J Am Vet Med Assoc 188:1174-7, 1986.

Table 1. Core Vaccines *
Dogs           Cat
Distemper Feline Parvovirus
Adenovirus   Herpesvirus
Parvovirus Calicivirus
Rabies   Rabies
_______________________________________
* Vaccines that every dog and cat should have.

Table 2.  Adverse Reaction Risks for Vaccines  *
There is less risk associated with taking a blood sample
for a titer test than giving an unnecessary vaccination.
_______________________________________________
* Veterinary Medicine, February, 2002.

Table 3. Titer Testing and Vaccination *

While difficult to prove, risks associated with overvaccination
are an increasing concern among veterinarians. These experts
say antibody titer testing may prove to be a valuable tool in
determining your patients™ vaccination needs
_____________________________________________________
* Veterinary Medicine, February, 2002.

Table 4. Vaccine Titer Testing  *
Research shows that once an animals titer stabilizes,
it is likely to remain constant for many years.
_____________________________________________
* Veterinary Medicine, February, 2002.

Table 5. Canine Vaccine Adverse Events  *

retrospective cohort study; 1.25 million dogs vaccinated at 360 veterinary hospitals 38 adverse events per 10,000 dogs vaccinated
-inversely related to dog weight vaccines prescribed on a 1-dose-fits-all basis, rather than by body weight.
– increased for dogs up to 2 yr of age, then declined
– greater for neutered versus sexually intact dogs
-increased as number of vaccines given together increased
-increased after the 3 rd or 4 th vaccination
-genetic predisposition to adverse events documented
____________________________________________________________ from Moore et al, JAVMA 227:1102–1108, 2005.

Table 6. Vaccine Conclusions For Canines  *

Factors that increase risk of adverse events 3 days after vaccination:
young adult age
small-breed size
neutering
multiple vaccines given per visit
These risks should be communicated to clients
_______________________________________________________
*  from Moore et al, JAVMA 227:1102–1108, 2005.

Table 7. Feline Vaccine Adverse Events  *

retrospective cohort study; 0.5 million cats vaccinated at 329 veterinary hospitals
51.6  adverse events per 10,000 cats vaccinated
inversely related to cat weight
increased for cats about 1 yr of age
greater for neutered versus sexually intact cats
increased as number of vaccines given together increased
Lethargy with or without fever was most common sign
_________________________________________________
*  from Moore et al, JAVMA 231:94-100, 2007.

Table 8. Vaccine Conclusions For Felines  *

Factors that increase risk of adverse events 30 days after vaccination:
young adult age
neutering
multiple vaccines given per visit
These risks should be communicated to clients, and the number
of vaccines administered concurrently limited
_______________________________________________________
*  from Moore et al, JAVMA 231:94-100, 2007.

Vaccines have been implicated in triggering some immune and chronic disorders.* This is especially true in certain susceptible breeds. There is an underlying genetic predisposition for harm, some of which may not be seen until later life in the form of increase disease. Some vaccines have antigens other than those which are clinically significant, some give little protection against the more important strains of a disease (leptospirosis), and some are not needed at the frequency previously recommended.see http://www.canine-epilepsy-guardian-angels.com/chang_vac.htm for full text article.

*(fever, stiffness, joint and abdominal tenderness, susceptibility to infection, CNS disorders, jaundice, autoagglutinated rbc’s, elevated liver enzymes, liver or kidney failure, seizures, hypothyroidism)

A 1995 study looked at these issues and “… veterinary vaccinologists have recommended new protocols for dogs and cats. These include: 1) giving the puppy or kitten vaccine series followed by a booster at one year of age; 2) administering further boosters in a combination vaccine every three years or as split components alternating every other year until; 3) the pet reaches geriatric age, at which time booster vaccination is likely to be unnecessary and may be unadvisable for those with aging or immunologic disorders. In the intervening years between booster vaccinations, and in the case of geriatric pets, circulating humoral immunity can be evaluated by measuring serum vaccine antibody titers as an indication of the presence of Aimmune memory@. Titers do not distinguish between immunity generated by vaccination and/or exposure to the disease, although the magnitude of immunity produced just by vaccination is usually lower …).”

Therefore; if an animal has adequate titers, the animal doesn’t need revaccination until some future time. Vaccine titers are available from university and commercial labs at reasonable cost.
This is especially recommended for animals previously experiencing adverse vaccine reactions or breeds at higher risk for such reactions (e.g., Weimaraner, Akita, American Eskimo, Great Dane).

I use only killed 3 year rabie vaccine for adults and give it separated from other vaccines by 3-4 weeks. In some states, they may be able to give titer test result in lieu of booster.

I do NOT use Bordetella, corona virus, leptospirosis or Lyme vaccines unless these diseases are endemic in the local area or specific kennel. Futhermore, the currently licensed leptospira bacterins do not contain the serovars causing the majority of clinical leptospirosis today. I do NOT recommend vaccinating bitches during estrus, pregnancy or lactation.

For breeds or families of dogs susceptible to or effected with immune dysfunction, immune-mediated disease, immune-reactions associated with vaccinations, or autoimmune endocrine disease (e.g., thyroiditis, Addison’s or Cushing’s disease, diabetes, etc.), the above protocol is recommended.

Other vaccines

Crotalus atrox Toxoid (Rattlesnake vaccine) two doses given one month apart with annual boosters.
The Task Force takes no position on the use of this vaccine, due to lack of experience. A reasonable expectationof efficacy does exist.

Porphyromonas sp. (Periodontal disease vaccine) see manufacturers labeled directions. The Task Force takes no position on the use of this vaccine, due to lack of experience. A reasonable expectationof efficacy does exist.
Non-Core : Read more on these  before deciding to administer.
Distemper-Measles (NEVER indicated in animals older than 12 wks)
Parainfluenza
Bordetella live and killed
Lyme Borreliosis
Leptospira interrogans

Not Recommended : Read more on these
Canine parvovirus (CPV-2) (killed)
Canine Adenovirus-1 (MLV & killed)
Canine Adenovirus-2 (CAV-2)(killed or MLV topical)
Canine Coronavirus (CCV)(killed and MLV)
Giardia lamblia (killed)

*MLV = modified live virus
**note: Canine Adenovirus-1 (MLV & killed) not recommended due to risk of hepatitis blue-eye reactions.
Canine Adenovirus-2 (CAV-2)(killed or MLV topical) not recommended as less effective than CAV-2 MLV parenteral<