Sources: US News
Pfizer and BioNTech say that their COVID-19 vaccine is 80% effective in young children. 2022-05-23
BioNTech CEO Uğur Şahin and Pfizer CEO Albert Bourla both say that their vaccine is likely to be effective against severe disease resulting from the Omicron variant. 2021-11-30
The U.S. CDC approves the Pfizer–BioNTech COVID-19 vaccine for children aged 5 and 11 years old. 2021-11-2
A study from the Public Health England shows that the vaccine developed by Pfizer is 96% effective against hospitalizations from the Delta variant, while the AstraZeneca–Oxford vaccine is 92% effective. 2021-06-14
Brazil signs a deal with Pfizer to purchase 100 million doses of the Pfizer–BioNTech vaccine. 2021-03-15
The government reaches an agreement with Pfizer for an additional 12 million doses of their vaccine. 2021-01-20
Supreme Leader Ali Khamenei calls for a ban on the American Pfizer and British AstraZeneca vaccines. 2021-01-8
Ireland officially begins a vaccination programme against COVID-19 using Pfizer-BioNTech's tozinameran vaccine, with a 79-year-old woman from Dublin becoming the first person to receive the vaccine. 2020-12-29
Pfizer formally ends its vaccine trial with a 95% success rate and will submit a regulatory approval "within days". 2020-11-18
Pfizer announces that they have launched a pilot delivery program for their potential vaccine in Rhode Island, Texas, New Mexico, and Tennessee. 2020-11-17