It is safe to administer Covid-19 vaccines and flu vaccines to patients at the same time, and doing so might increase vaccination rates, according to a report published on Thursday in The Lancet. Researchers randomly assigned 697 adult volunteers to receive their second dose of either the mRNA vaccine from Pfizer/BioNTech or the viral-vector vaccine from AstraZeneca/Oxford, along with one of three influenza vaccines for the 2020-2021 season (FluAd or Flucelvax from Seqirus UK or Flublok from Sanofi) or a placebo.
Most reactions to the shots were mild or moderate, and antibody responses to the vaccines were not adversely affected by getting two shots at once, the study found. Giving both vaccines at a single appointment "should reduce the burden on health-care services for vaccine delivery, allowing for timely vaccine administration and protection from Covid-19 and influenza for those in need," the research team concluded.