Yeast allergy
Residual of yeast can be found in HBV and HPV vaccines produced by cell
cultures of Saccharomyces Cerevisiae . Allergy to yeast is very
rare, especially in young individuals, and in case of allergy suspicion
such patients need to undergo allergy workup: I) skin prick test with
yeast extract; II) specific IgE to yeast. In case of positive results
vaccination with fractionated doses is necessary.