Do not vaccinate unhealthy chickens.
Avoid early exposure of chicks to Marek’s disease to allow for development of protection.
No more than one single dose of vaccine should be administered to one day old chicks only.
No information is available on the safety and efficacy from the concurrent use of this vaccine with any other except Poulvac IB Primer and Poulvac NDW. It is therefore recommended that no other vaccines than these should be administered within 14 days before or after vaccination with the product.
Do not mix with any other vaccine/immunological product except Poulvac Marek Diluent.
The vaccine has shown to be safe in ten-fold times the recommended dose. No emergency procedure has been described.
Special warnings
The vaccine viruses have the potential to spread. All chickens on a site should be vaccinated. In a study in highly susceptible Rhode Island Red birds, vaccine virus was shown to increase in virulence after 10 passages.
Special precautions for use in animals
Exposure to heat and direct sunlight must be avoided.
Contact with disinfectants makes the vaccine ineffective.
Use clean materials for vaccination.
Avoid vaccination of stressed animals.
Avoid injection into or near joints and tendons.
Operator Warnings
To avoid all possible risks of working with liquid nitrogen and/or explosion of glass ampoules, the following precautions must be taken:
- Use of gloves.
- Use of facial protection or safety goggles.
- Use of skin-covering clothing.
Liquid nitrogen causes serious freeze burns and thawing ampoules may occasionally explode after removal from the liquid nitrogen. Operators must protect their face with a visor or goggles and hands with gloves, when handling liquid nitrogen containers and when thawing ampoules.
If liquid nitrogen is spilt and comes into contact with skin causing frost bite injuries immediately:
Warm affected area by immersion in water at 29 ± 1°C or by the use of body heat. Considerable pain will be experienced during warming but this is normal. Do not rub the affected area. Seek medical advice if full function and feeling are not rapidly restored.
After handling vaccine, operators should wash and disinfect their hands with an approved disinfectant.
Withdrawal period
Zero days.