YANGON, Myanmar (AP) — Police cracked down on demonstrators opposing Myanmar’s military coup, firing warning shots and shooting water cannons to disperse crowds that took to the streets again Tuesday in defiance of rules making protests illegal. Water cannons were used in Mandalay,...

Evidence is mounting that having COVID-19 may not protect against getting infected again with some of the new variants. People also can get second infections with earlier versions of the coronavirus if they mounted a weak defense the first time, new research suggests. How long immunity lasts...

The United States announced plans Monday to reengage with the much-maligned U.N. Human Rights Council that former President Donald Trump withdrew from almost three years ago, as the Biden administration reverses another Trump-era move away from multilateral organizations and agreements....

WASHINGTON (Reuters) - President Joe Biden said that it will be difficult for the United States to reach herd immunity, at least 75% of the population inoculated against the coronavirus, by the end of this summer. “The idea that this can be done and we can get to herd immunity much...