Ovalbumin content of influenza vaccines

Abstract

Some 2009–2010 influenza vaccine package inserts indicate that each dose may contain up to 1 μg ovalbumin; others do not provide information on ovalbumin content. The ovalbumin content of influenza vaccines is important if these vaccines are administered to patients with egg allergy. In a previous publication (1) we (MAR and JTL) proposed a protocol for administration of influenza vaccine to patients with egg allergy when the ovalbumin content of the vaccine is unknown.