However, "if you ask me I think there will be a need... for revaccinations". How they work, why we need them and who developed them.
Speaking at a CVS Health online event, Bourla said current research indicates the SARS-CoV-2 virus which causes COVID-19 has similar characteristics to that of influenza viruses, which will make periodic inoculation necessary to prevent outbreaks.
"Together we are demonstrating that through mass vaccinations we can defeat the COVID-19 pandemic and save lives", Bourla said in a video address.
'It is extremely important to suppress the pool of people that can be susceptible to the virus, ' Bourla said during the segment, which was taped April 1.More news: India reports record 200,000 new covid-19 cases as outbreak spreads
Speaking in an interview on American television, Pfizer CEO, Albert Bourla, said that his company was now evaluating long-term vaccination needs, but that a third dose and annual revaccination were a "likely scenario".
President Joe Biden's chief science officer David Kessler told a congressional committee meeting on Thursday that his team are "expecting" to have to administer booster jabs.
"We don't know everything at this moment".
"It seems strong but there is some waning of that and no doubt the variants challenge" that, he said.More news: U.S. prepares sanctions against Russian Federation over cyber attacks, election interference
"We are studying the durability of the antibody response", he said.
"I think for planning purposes, planning purposes only, I think we should expect that we may have to boost".
The Pfizer vaccine, developed by the US-based company in partnership with German firm BioNTech, now plays a leading role in American and European vaccination campaigns.
In February, the company began testing whether a third shot could offer greater protection against emerging strains of the virus, like the concerning strain first detected in South Africa.
About 144 volunteers will be given the third dose, mostly those who participated in the vaccine's early-stage USA testing a year ago.More news: Russian top diplomat says Moscow 'expects' Iran nuclear deal to be saved
In the U.S., health officials are already preparing for booster doses to be issued between nine and twelve months after people are fully vaccinated.