The risks related to influenza infection in pregnant women have been recognised for a long time.¹ The pandemic of the virus A/H1N1 in the 2009-2010 season was no exception: pregnant women were at greater risk of contracting a severe form of A/H1N1 influenza than the general population, and those who contracted the infection had a higher frequency of adverse pregnancy outcomes than those who did not contract the virus.^2,3 Although the safety data are limited, pregnant women were included in the priority categories in the vaccination programmes against A/H1N1.