A study published today in JAMA Internal Medicine shows that wearing two face coverings can nearly double the effectiveness of filtering out SARS-CoV-2-sized particles, preventing them from reaching...

WASHINGTON — The Biden administration on Wednesday began to undo a Trump-era ban on clinics referring women for abortions, a policy directive that drove Planned Parenthood from the federal...

IQUITOS, Peru — When Adriana Wong reached the field in the Amazon forest, she was confused. There were dozens of crosses planted in the red soil, but nothing to distinguish her father’s grave. “Are...

WASHINGTON — The Senate confirmed a soft-spoken physician as President Joe Biden’s surgeon general Tuesday. While Dr. Vivek Murthy says ending the coronavirus pandemic is his top priority,...

PARIS — Residents of Paris and several other regions of France spent their first weekend under a limited monthlong lockdown. While the French government insisted the rules would be less strict than...

MEXICO CITY — Mexico’s top diplomat said Friday the U.S. will send 2.7 million doses of unused AstraZeneca vaccine next week, and acknowledged continuing questions about whether Mexico agreed to...

WASHINGTON — The Senate on Thursday confirmed California Attorney General Xavier Becerra as President Joe Biden’s health secretary, filling a key position in the administration’s...

BANGKOK — Thailand’s prime minister received a shot of the COVID-19 vaccine manufactured by AstraZeneca on Tuesday, as much of Asia shrugged off concerns about reports of blood clots in some...

BRUSSELS — Australia is seeking assurances from the European Union’s executive arm that future shipments of vaccines will not be blocked, after Italy banned a large export of the AstraZeneca...

Prior to the emergence of new mutants of the coronavirus, such as the British variant B.1.1.7, the SARS-CoV-2 variant named D614G had already mutated from the original SARS-CoV-2 pathogen that triggered...