MANAGEMENT OF VACCINE-INDUCED INFECTIONS BURSAL DISEASE IN CHICKS WITH ANTIBIOTICS AN ANTIDIARROEICS

An experiment was mounted to investigate if over dosing the chicks with normal infectious bursal disease (IBD) vaccine could be responsible for some of these outbreaks of IBD in vaccinated flocks. The clinical IBD was managed with antibiotics and antidiarrhoeics in order to reduce losses. Three hundred two-week old turkey poults were each administered two doses of IBD vaccine of chick embryo cell culture origin. This produced clinical infectious bursal disease in the cockerel chicks but the turkey Poults did not suffer clinical infection. Administration of an antibiotic- antidiarrhoeic preparation (Ampicilline trihydrate 10% Aluminium hydroxide 80% and sodium bicarbonate 10%) at a dose of 2g per litre of water for five days reduced both morbidity and mortality from 60% and 94% (in the control groups) to 14% and 15% respectively in the Experimental groups.

Anaphylaxis to simultaneous administration of inactivated tissue culture hepatitis A vaccine and purified chick embryo cell rabies vaccine after multiple doses

Both the inactivated hepatitis A vaccine (Aimmugen) and purified chick embryo cell rabies vaccine (PCECV, Rabipur) are well tolerated. Anaphylaxis has rarely been reported as an adverse reaction of these vaccines. There have been no reports or published case reports of anaphylaxis due to Aimmugen. According to the Japanese Ministry of Health, Labour and Welfare Aimmugen adverse reaction report, no cases of anaphylaxis have been reported from April 2013 to August 2016. Twenty cases of anaphylaxis due to PCECV (RabAvert) have been reported from 1997 to 2005 in USA, whereas 2 cases have been reported from 2006 to 2016. We report a case of anaphylaxis after multiple vaccinations in a 24-year-old man with ulcerative colitis, previous medical history of tonsillectomy for IgA nephropathy and no history of allergies.

Clinical evaluation of purified chick embryo cell rabies vaccine administered intradermally in animal exposures

Background: In India, presently there are two purified chick embryo cell culture vaccines (PCECV) viz., Rabipur (Flury LEP strain) and Vaxirab – N (Pitman Moore strain) which are commonly used both in public as well as private sectors. The present study was conducted to assess the clinical efficacy in terms of safety, immunogenicity and survival status of both the PCECV administered animal exposures taking complete PEP at the anti-rabies clinic.Methods: A longitudinal study was conducted at the anti-rabies clinic, Kempegowda Institute of Medical Sciences (KIMS), Bangalore, India. 86 suspect rabid dog bite cases attending clinic were enrolled and followed up for 1year. All the animal bite cases were given post exposure prophylaxis of full course of PCECV i.e. Rabipur or Vaxirab - N as per schedule intradermally using updated Thai Red Cross regimen. The rabies virus neutralizing antibody (RVNA) concentrations on days 14, 28, 90, and 180 were tested by modified rapid fluores­cent focus inhibition test.Results: Out of 86 study subjects, 43 subjects received Rabipur and another 43 subjects received Vaxirab –N vaccines. The incidence of adverse drug events (ADEs) was found to be 9.3%. All subjects had protective RVNA titers of ³0.5 IU/ml from day 14 till day 180. All the study subjects were healthy and alive after 6 months of completing PEP.Conclusions: The currently available purified chick embryo cell culture rabies vaccines are safe, immunogenic and clinically effective for post exposure prophylaxis in animal bite cases, which will help in eliminating human rabies by 2020.

Safety of intradermal rabies vaccine as pre-exposure prophylaxis among veterinary students

Background: Animal bites are a major public health problem in our country. Pre-exposure vaccination using cell culture vaccines is a safe and effective method of preventing rabies and is recommended for anyone who will be at continual, frequent or increased risk of exposure to the rabies virus, as a result of their occupation, such as veterinarians, animal handlers and laboratory workers dealing with any lyssaviruses. The present study was done to assess the safety of purified chick embryo cell rabies vaccine administered as pre-exposure regimen.Methods:The present study assessed the safety of purified chick embryo cell rabies vaccine administered as a 3 dose intradermal pre-exposure vaccination in healthy volunteered veterinary students of Government Veterinary College, Bangalore. Results: 122 apparently healthy adults of both sex, between 18 and 30 years of age were enrolled in the study and 105 (86%) completed all three doses. A total of 342 doses of intradermal vaccine were administered, among which 38 adverse reactions were reported from 19 veterinary students. The adverse reactions were pain at the injection site 7 (2.1%), redness 13 (3.8%), itching at the site of injection 11 (3.2%), induration 6 (1.8%) and headache 1 (0.3%). All reactions subsided without any complication and none of them dropped out from the study because of any adverse drug reactions. Conclusions:Pre-exposure vaccination is a useful tool for protecting high risk groups and purified chick embryo cell rabies vaccine has proved to be safe and well tolerated by intradermal route.