Tenosynovitis Vaccine

ENTEROVAX Vaccine is a live vaccine containing an avian reovirus (tenosynovitis biotype) in a freeze-dried preparation sealed under vacuum.

This product has been shown to be effective for the vaccination of healthy chickens 1 day of age or 1 week of age or older against reovirus induced tenosynovitis (viral arthritis).

  • Provides strong immunity against viral arthritis (tenosynovitis) caused by reovirus
  • SAFE. The mild-reacting strain will not cause lameness or mortality when used as directed
  • Approved for coarse spray administration at day of age or by drinking water to birds 1 week of age or older
  • Ideal for use in breeder replacement and broiler flocks carried to heavier weights

  • Tenosynovitis

Many factors must be considered in determining the vaccination program for a particular farm or poultry operation. To be fully effective, the vaccine must be administered to healthy receptive birds held in proper environment under good management. In addition, the response may be modified by the age of the birds and their immune status. Seldom does 1 vaccination under field conditions produce complete protection for all individuals in a given flock. The amount of protection required will vary with the type of operation and the degree of exposure that a flock is likely to encounter.

  2. Do not use any disinfectants in the drinking water for 48 hours before vaccinating and 24 hours after vaccination.
  3. Withhold water from the chickens until they are thirsty.
  4. Calculate the water volume needed so the vaccine will be consumed in approximately 2 hours.
  5. Optional: as an aid in preserving the virus, add a vaccine stabilizer to the stock solution or to the tank containing clean, cool, non-chlorinated water. Agitate thoroughly. Follow the manufacturer’s rate of administration and wait time.
  6. Add rehydrated vaccine from vial to the water and mix thoroughly.
  7. Turn on tank valve or automatic dosing system.
  8. Provide as sole source of drinking water until all vaccine-water solution has been consumed.

Calculate the water volume needed. For example, a machine which dispenses 21 ml to a box of 100 chickens – total volume for 1,000 doses is 210 ml and/or 2,000 doses is 420 ml, 5,000 doses is 1,050 ml of non-chlorinated water. For coarse spray in chicken houses, follow manufacturer’s direction for the particular spray machine. Add rehydrated vaccine and mix thoroughly.

10 x 1,000 doses

  2. All chickens should be vaccinated at the same time.
  3. Do not administer this product by injection. Studies have demonstrated that injection will produce significant mortality in day of age chickens.
  4. Do not administer this product to breeders 18 weeks of age or older. Studies have demonstrated that the vaccine virus will be shed in the eggs.
  5. Use entire contents when first opened.
  6. Do not vaccinate within 21 days of slaughter.
  7. Store at 2° to 8° C (35° to 46° F).
  8. Do not freeze. Inactivate unused contents before disposal.
  9. Do not mix with other products, except as specified on this label.
  10. In case of human exposure, contact a physician.
  11. Contains gentamicin as a preservative.

This vaccine has undergone rigid potency, safety and purity tests, and meets Merck Animal Health, U.S. and local requirements. It is designed to stimulate effective immunity when used as directed, but the user must be advised that the response to the product depends upon many factors, including, but not limited to, conditions of storage and handling by the user, administration of the vaccine, health and responsiveness of individual chickens and the degree of field exposure. Therefore, directions should be followed carefully. A safety data sheet (SDS) is available upon request. This and any other consumer information can be obtained by calling Merck Animal Health Customer Service at 1-800-211-3573.

Keep a record of vaccine, quantity, serial number, expiration date, and place of purchase; the date and time of vaccination; the number, age, breed, and locations of chickens; names of operators performing the vaccination and any observed reactions.

Contact our sales or technical services representatives to help design a custom vaccination program.

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For additional information, please see the product label.
For more information regarding efficacy and safety data, go to productdata.aphis.usda.gov.

*Data on file, Merck Animal Healt

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