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US health officials call for COVID booster shots

U.S. health officials Wednesday announced plans to dispense COVID-19 booster shots to all Americans to shore up their protection amid the surging delta variant.

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Half of US adults have received at least 1 COVID-19 shot

The U.S. cleared the 50% mark just a day after the reported global death toll from the coronavirus topped a staggering 3 million.

 
Second COVID-19 vaccine approved by US as deaths grow

The U.S. added a second COVID-19 vaccine to its arsenal Friday, boosting efforts to beat back an outbreak so dire that the nation is regularly recording more than 3,000 deaths a day.

 
COVID-19 vaccine 95% effective, Pfizer seeking clearance in days

Pfizer says that more interim results from its ongoing coronavirus vaccine study suggest the shots are 95% effective and that it protects older people most at risk of dying from COVID.

Utah’s coronavirus spike worsens as governor studies measures

A spike of coronavirus cases in Utah that began after schools and colleges resumed classes reached a new peak Friday and led the state’s Republican governor to say again that he’s considering new measures to combat the spread of the virus.

Tests reveal coronavirus in Yosemite National Park’s sewage

Tests of the park’s raw sewage have confirmed the presence of the virus, the San Francisco Chronicle reported Saturday, and dozens of people are believed to have been infected.

Early coronavirus vaccine results encouraging, Moderna says

An experimental vaccine against the coronavirus showed encouraging results in very early testing, triggering hoped-for immune responses in eight healthy, middle-aged volunteers, its maker announced Monday.

Europe extends openings; China to give $2B to virus fight

As nations carved out a new normal amid the coronavirus pandemic, the World Health Organization was holding its main annual meeting — conducted online this year.