The course of influenza during pregnancy compared to common population is more frequently accompanied with complications
and used to be coupled with hospitalization. Vaccination provides protection for mothers. Maternal immunoglobulin
G actively penetrates through the placenta and provides passive immunity for the foetus and newborn during
the first months of their life, when the child cannot be vaccinated. After 2009, when pandemic influenza occurred,
pregnancy was identified as an independent predictive factor of death from influenza. It has led to the change in recommendations
for vaccination against influenza and pregnant women are at present considered as a risk group that
should be vaccinated.