Pfizer CEO Albert Bourla said people will likely need a third dose of a Covid-19 vaccine within a year of getting fully vaccinated.
Pfizer and BioNTech, are still studying how long the vaccines' protective immunity will last and their research will help guide whether or not additional booster shots will be needed.
Moderna is also looking at a yearly Covid-19 vaccine, but that would also help protect you from flu strains.
Stéphane Barcelona, Moderna CEO said "what we're trying to do at moderna, actually, is to get a flu vaccine in the clinic this year and combine a flu vaccine to a Covid vaccine so that you only have to get one boost at your local CVS store, at your GP every year, that will protect you to a variant of concern against Covid and a seasonal flu strain."