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→Vaccine Failure
==Vaccine Failure==
==Vaccine Failure==
Failures do occur and should be reported on the VMD [[[http://www.vmd.gov.uk/ 'yellow form' MLA252A]|'yellow forms']]. Circumstances leading to vaccine failure include:
*Recipient is already infected with the virus or is immunosuppressed and unable to mount an immune response.
*Recipient is already infected with the virus or immunosuppressed
*Break down of the '''cold-chain''' during transport (incorrect storage of vaccines requiring refridgeration)
*Break down of the '''cold-chain''' during transport
*Improper administration (e.g.myxomatosis vaccine)
*Improper administration
*Accindental mixing of inactivated and live vaccines in the same syringe
*Recipient has maternal antibody to the vaccine
*Recipient has maternal antibody to the vaccine
*Not enough animals vaccinated
*Immunity waning due to missed booster vaccination
*Vaccine is counterfeit or homeopathic
*Vaccine is damaged during manufacture
==Test Yourself==
==Test Yourself==