Freeze Dried Live Vaccine – Chicken Infectious Anemia – OA1 strain

Chicken Infectious Anemia (CIA)

Chicken Infectious Anemia (CIA) is caused by a circovirus with a worldwide distribution. The disease that is clinically manifested as bone marrow atrophy, anemia and severe immunosuppression affects mostly 2-4-week-old chickens, that are infected via the “vertical” route. Clinical signs often appear in a snap and include depression, reluctance to move, ruffled feathers, drooping wings and pallor of the skin of the head (especially the comb, beak, and mucous membranes). Characteristic PM findings include atrophic thymus, spleen and Bursa of Fabricius. Mortality reaches 20% and surviving birds show retarded growth. Secondary infections (due to immunosuppression) are common sequelae of CIA outbreaks. Live vaccines (see Gyrovac) are used to prevent CIA breeder-progeny transmission.

Additional information


Live Chicken Infectious Anemia Virus, strain OA1: 10 4.5 – 10 5.5 TCID50


Immunization of future layers and breeding stock (chickens) against Chicken Infectious Anemia

Indications for use

Use by instructions of a veterinarian.
Use immediately after reconstitution with antiseptic or disinfectant free drinking water.

Administration and dosage

Drinking water:
• Make sure that drinking water is free of any traces of disinfectants.
• Deprive the birds of drinking water two hours before vaccination.
• Prepare adequate volume of drinking water to be consumed within one to two hours.
• Protect the dissolved vaccine from chlorine by adding BIOVAC'S Blue Neutrachlor® (following the instructions) or skim milk powder (50g/20L) or skim milk (0.5L/20L) to drinking water to be consumed within one to two hours.
• Stir well after mixing and allow solution to stand for 20 min. before adding the vaccine.
• Mix well the reconstituted vaccine in the final volume of disinfectant-free drinking water.
• Let the birds consume all the vaccine-water volume before renewing water supply.


• Vaccinate healthy birds only.
• Use entire contents of the vial when first opened.
• Destroy unused contents and decontaminate empty vials before discarding them.
• Keep vaccination records including vaccine batch number.


Store at 2ºC-8ºC, protected from direct sunlight.


Each box contains 10 or 20 vials of 1,000, 2,500 or 5,000 doses.

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