(CORYZA, serotypes A, B or C).
This vaccine is prepared from three inactivated strains of Avibacterium paragallinarum belonging to serotypes A, B, and C (Page classification scheme),
and suspended in the aqueous phase of an oil adjuvant emulsion.
CORVAC-3® is an inactivated oil adjuvant emulsion bacterin. It is approved for use in chickens five weeks of age or older via subcutaneous injection.
- Broad-spectrum protection against infectious coryza
- Optimum antigen content
- Dependable development of immunity
This product has been shown to be effective for the vaccination of healthy chickens 5 weeks of age or older against disease caused by Avibacterium paragallinarum (CORYZA). Duration of immunity has not been established. For more information regarding efficacy and safety data, see – productdata.usda.aphis.gov.
Allow the vaccine to reach ambient temperature, 16° to 27°C (60° to 80°F), shake well before use and periodically during use. Inject 0.5 ml subcutaneously in chickens in the back of the neck midway between the head and body in a direction away from the head using an 18-gauge needle. Do not inject into muscle tissue or neck vertebrae. Vaccinate healthy chickens at least 5 weeks of age. A second vaccination is recommended a minimum of 4 weeks following initial vaccination and 3-4 weeks prior to the onset of lay. The use of any inactivated vaccine may cause false positive results on Mycoplasma plate tests. Avoid Mycoplasma testing prior to ten weeks post-vaccination.
Clinical reactions may occur as a result of transient swelling in the neck region following vaccination. These reactions may be aggravated by improper vaccination technique. If shock is observed, this must usually be ascribed to stress by handling.
1. TO AVOID HUMAN INJECTION, EXTREME CAUTION SHOULD BE USED WHEN INJECTING ANY OIL EMULSION VACCINE. ACCIDENTAL HUMAN INJECTION MAY CAUSE SERIOUS LOCAL REACTIONS. CONTACT A PHYSICIAN IMMEDIATELY IF ACCIDENTAL HUMAN INJECTION OCCURS.
2. Do not administer this vaccine during the critical egg laying period from onset until after peak production. Administration of this product during the lay period may result in a drop in egg production.
3. Injection of inactivated vaccine into breast muscle may create processing plant problems under certain conditions.
4. Ensure that vaccination equipment is clean and sterile before use.
5. Do not use vaccination equipment with rubber parts, as the oil emulsion may attack certain types of rubber.
6. Use entire contents when first opened.
7. Do not vaccinate chickens within 42 days before slaughter.
8. Store at 2° to 8°C (35° to 46°F) in the dark.
9. Do not mix with other products.
10. In case of human exposure, contact a physician.
11. Contains thimerosal as a preservative.
12. FOR ANIMAL USE ONLY
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.
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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