The cases were not related to Pfizer's new vaccine, the pharmaceutical giant claimed, in contrast to the investigator's assessments.
Britain's health regulatory agency approved its first COVID-19 booster targeting Omicron BA.4 and BA.5 variants.
For now, the new booster shots are free of charge for everyone.
Those who use the drug should immediately consult their health care provider.
When will Pfizer's COVID-19 pill become widely available?
Novavax has conducted early data on its vaccine that targets COVID-19 and the flu
Regulators in this country have authorized the use of Moderna’s vaccine for kids
Pfizer shared promising results Thursday regarding its COVID-19 booster dose for children aged 5 to 11.
Two studies published Monday concluded the risks of heart inflammation following COVID-19 vaccination
Moderna confirmed Friday that 764,000 doses of its notable COVID-19 vaccine will be revoked
In a meeting Wednesday, the FDA said that regulators need to determine if additional COVID doses are needed by this time
Regulators discuss the need for additional COVID-19 booster doses
The CDC compared the risks of cardiovascular complications from COVID-19 infection and vaccination.
A study found that pregnancy, along with other comorbidities, can increase the chance of getting a breakthrough COVID-19 infection.
The CDC advised recipients of Johnson & Johnson’s single-dose vaccine to get a booster with one of the mRNA vaccines.
A fourth COVID-19 vaccine dose has been approved by the Food and Drug Administration for those 50 or older.
The FDA will likely approve a second COVID-19 booster shot for adults next week
Moderna announced how effective its mRNA vaccine is for children under the age of 6
Nitrosamine is present at levels above "Acceptable Daily Intake" in the products.
A study published in The Journal of the American Medical Association looked at J&J's vaccine effectiveness
A study published in the New England Journal of Medicine examines the efficacy of a fourth COVID vaccine dose.
Pfizer-BioNTech’s chief executive says that his company is moving closer to providing a fourth dose of its COVID-19 vaccine that will cover all existing variants.