A dog & canine forum. DogBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » DogBanter forum » Dog forums » Dog health
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Vaccines -- Adverse Events within Three Days JAVMA 10/1/05



 
 
Thread Tools Display Modes
  #1  
Old October 6th 09, 11:53 AM
Kris L. Christine Kris L. Christine is offline
Senior Member
 
First recorded activity by DogBanter: Feb 2008
Location: The Rabies Challenge Fund
Posts: 281
Default Vaccines -- Adverse Events within Three Days JAVMA 10/1/05

The quotes in red below are from the attached scientific report covering adverse events within 3 days of vaccination in dogs over the course of 2 years. Reports of dogs having vaccinal adverse reactions within the same time frame were not included if heartworm medication had been administered along with the vaccines. This study did not include adverse reactions such as development of fibrosarcomas and/or other conditions which take longer than 3 days to develop.

Moore, George E. et als., Adverse events diagnosed within three days of Vaccine Administration in Dogs, Journal of the American Veterinary Medical Association, Vol 227, No. 7, October 1, 2005

Animals—1,226,159 dogs vaccinated at 360 veterinary hospitals.

Results—4,678 adverse events (38.2/10,000 dogs vaccinated) were associated with administration of 3,439,576 doses of vaccine to 1,226,159 dogs. The VAAE rate decreased significantly as body weight increased. Risk was 27% to 38% greater for neutered versus sexually intact dogs and 35% to 64% greater for dogs approximately 1 to 3 years old versus 2 to 9 months old. The risk of a VAAE significantly increased as the number of vaccine doses administered per office visit increased; each additional vaccine significantly increased risk of an adverse event by 27% in dogs ≤ 10 kg (22 lb) and 12% in dogs 10 kg.

Conclusions and Clinical Relevance—Young adult small-breed neutered dogs that received multiple vaccines per office visit were at greatest risk of a VAAE within 72 hours after vaccination.

Records for dogs that received both an injectable heartworm preventive and a vaccine during the same office visit were not included in analyses.

Population—In the 2-year study period, 4,531,837 vaccine doses were administered to 1,537,534 dogs at 360 veterinary hospitals.

Among breeds with 5,000 or more dogs vaccinated, Dachshund, Pug, Boston Terrier, Miniature Pinscher, and Chihuahua breeds had the highest rates of VAAEs with 121.7, 93.0, 83.8, 76.4, and 76.1 adverse events/10,000 dogs vaccinated, respectively (Table 1). The VAAE rate for mixed-breed dogs was in the bottom quintile of all rates.

The VAAE rates decreased significantly as body weight increased (P for trend 0.001; Figure 1). For all vaccines or for rabies vaccine alone, the VAAE rate for 10.1- to 45.0-kg (22.2- to 99.0-lb) dogs was approximately half the rate for dogs that weighed 0 to 10.0 kg (0 to 22.0 lb; P 0.001; Figure 2). For rabies vaccine administered alone, VAAE rates/10,000 dogs that weighed 0 to 10.0 kg, 10.1 to 45.0 kg, and 45 kg were 32.1 (222/69,178), 15.3 (69/45,088), and 0.0 (0/1,966), respectively.

The risk of a VAAE significantly increased as the number of vaccines administered per office visit increased (P for trend 0.001).

In all dogs, each additional vaccine administered per office visit increased the rate of a VAAE by 24.2%; the rate increase was significantly (P 0.001) greater in dogs that weighed 0 to 10.0 kg, compared with dogs that weighed 0.1 to 45.0 kg (27.3% vs 11.5%, respectively; Figure 4). The 3 dogs with recorded deaths each had received ≥ 4 vaccines at their last office visit.

The lowest rate was observed with parenteral administration of Bordetella vaccine (15.4/10,000; 82 VAAEs/53,238 doses), and the highest rate was observed with Borrelia (Lyme disease) vaccine (43.7/10,000; 132 VAAEs/30,201 doses).

The risk of a VAAE in this study population was inversely related to a dog’s weight.

Factors known to cause vaccine reactions include the primary vaccine agent or antigen, adjuvants, preservatives, stabilizers, and residues from tissue cultures used in vaccine production.

The overall formulation of various vaccine components (eg, antigen, adjuvants, and diluent) is proprietary information that was unavailable for analysis in our study; thus, the variation in VAAE rates among single-antigen vaccines
may not be solely attributable to the primary vaccine antigen.

... because of genetic heterogeneity, the relatively low VAAE rate observed in mixed-breed dogs suggests that laboratory safety trials that use such dogs may underestimate the VAAE rates that would occur in purebred dogs. This is important because purebred dogs comprise at least two thirds of the US dog population.

The risk of allergic reaction has been reported to increase after the third or fourth injection of a vaccine (ie, a booster response).

Neutering appeared to increase risk of a VAAE more than sex. Females mount stronger immune responses after vaccination or infection than males because of a dimorphic enhancing effect of estrogens and a protective effect of androgens.
__________________
Kris L. Christine
Founder, Co-Trustee
THE RABIES CHALLENGE FUND
www.RabiesChallengeFund.org
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2008 RABIES Vaccine-JAVMA Report Adverse Reactions in Dogs Kris L. Christine Dog health 5 January 5th 10 11:52 AM
LEPTOSPIRA VACCINE--Adverse Reactions Kris L. Christine Dog health 0 February 5th 08 10:38 PM
JAVMA article on neutering Judy Dog health 26 January 21st 08 05:16 AM
Boykin Spaniels in AKC events soon! Chris Dog activities 1 November 9th 05 10:00 PM
Adverse drug reactions Reporter Dru Sefton Dog health 0 March 14th 05 05:31 PM


All times are GMT +1. The time now is 01:17 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.Search Engine Optimization by vBSEO 3.2.0 (Unauthorized Upgrade)
Copyright ©2004-2024 DogBanter.
The comments are property of their posters.