Is it possible to administer pregnant women two vaccines simultaneously?
Sometimes, several vaccines must be administered simultaneously during pregnancy; such is the case of Tdap (tetanus and diphtheria toxoids with acellular pertussis vaccine) and influenza vaccine, for instance.
In studies that enrolled non-pregnant individuals to assess the safety of concurrent administration of Tdap and influenza vaccines, compared to their separate use, there was no evidence of increased risk of adverse events.