Concomitant vaccination, a new horizon in the prevention of COVID-19 and influenza


  • The concomitant administration of vaccines against influenza and COVID-19 has been shown to be as effective as their separate administration, without reducing the immune response.

  • Additional research suggests that combining vaccines is not only safe but could also enhance efficacy against certain types of influenza viruses.

  • Administering both vaccines simultaneously could relieve the burden on healthcare systems, optimizing resources and time for both patient groups and healthcare personnel.


Seville, March 4, 2024


In an effort to combat not only the COVID-19 pandemic but also other viral diseases such as the flu, a research team from the Instituto de Biomedicina de Sevilla (IBiS) has demonstrated the efficacy and safety of administering both vaccines simultaneously. This approach could help alleviate the burden on the healthcare system by optimizing resources and response times.

This work is a multicenter study led by IBiS and the "Hospital Universitario Virgen del Rocío", with de participation of "Centro de Salud Los Bermejales en Sevilla" and the group of Prof. Adolfo García Sastre, from the Icahn School of Medicine at Mount Sinai Hospital in New York.