As most of the country looks forward to moving on from Covid-19 and a return to normalcy, major drug companies are saying that another vaccine will be necessary. Pfizer CEO Albert Bourla said on Sunday that Americans will need another shot to keep hospitalizations manageable.

The Hill reports:

“Right now, the way that we have seen, it is necessary, a fourth booster right now. The protection that you are getting from the third, it is good enough, actually quite good for hospitalizations and deaths,” Bourla said while appearing on CBS’s “Face the Nation.”

“It’s not that good against infections but doesn’t last very long. But we are just submitting those data to the FDA [Food and Drug Administration], and then we will see what the experts also will say outside Pfizer,” he added.

In August, the FDA fully approved Pfizer’s COVID-19 vaccine for people at least 16 years old or older. A third dose of Pfizer’s vaccine has been granted emergency use authorization.

“It’s clear that there is a need in an environment of omicron to boost the immune response,” he said while appearing on CNBC’s “Squawk Box.”

Other countries have already begun rolling out the fourth vaccine.