Pharmacotherapeutic group: live virus vaccines for poultry, Avian Encephalomyelitis Virus

ATCvet code: QI01AD02

The vaccine contains the enterotropic virus strain 1143 Calnek which is not adapted to eggs. The parent animals are vaccinated at a time, in which they are usually ageresistant to the disease. The purpose of the vaccination is the development of neutralising maternal antibodies that are transmitted via the yolk sack to the chicks to protect them against infection during the first few weeks of life. Results from animal studies demonstrate that specific antibodies against Avian Encephalomyelitis Virus are detected from 3 weeks post vaccination. Field data demonstrate that specific antibodies are present in vaccinated animals for 44 weeks after vaccination.