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International
vaccine bank
Vaccine formulation
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Ring vaccination around an epidemic may be performed
if 'stamping out' alone proves inadequate to prevent the spread of
disease.
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Several banks of inactivated FMD antigen exist - for
example, the International Vaccine Bank, the European Union Antigen
Reserve, and the North American Antigen Bank. A number of countries
also have their own national antigen reserves.
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Emergency vaccines usually have a higher antigen payload
than routine vaccines in order to induce a more rapid immune response
and higher antibody titres. High titres broaden the range of heterologous
protection.
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