Changes

==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:

Failures do occur and should be reported on the VMD [http://www.vmd.gov.uk/ 'yellow form' MLA252A]. 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 is immunosuppressed and unable to mount an immune response.