U.S. President Joe Biden on May 3 imposed new travel restrictions on India in light of the Covid-19 epidemic, barring most non-U.S. citizens from entering the United States.

Despite a high-profile visit to China by a team of international experts in January, the world is no closer to knowing the origins of Covid-19, according to one of the authors of an open letter calling for a new investigation into the pandemic.

A potent coronavirus variant originating in South Africa and found to be partly resistant to current vaccines and antibody treatments was detected for the first time in the United States in two South Carolina patients, health officials said.

More than two-thirds of the 15 million coronavirus vaccines shipped within the United States have gone unused, U.S. health officials said on Jan. 4, as the governors of New York and Florida vowed to penalize hospitals that fail to dispense shots quickly.

The United States shattered the country’s daily record for coronavirus infections on Thursday, reporting more than 77,000 new cases as the number of deaths in a 24-hour period rose by nearly 1,000, according to a Reuters tally.

The U.S. Food and Drug Administration issued guidelines for where the regulatory agency will set the bar for approval of a vaccine for COVID-19.

In the battle against COVID-19, the United States continues to see spikes in multiple states, and the nation’s top virus expert says the next few weeks will be critical to contain the spread of the disease that has caused the death of more than 121,000 Americans.

Another wave of states prepared to ease coronavirus restrictions on U.S. commerce this week, despite health experts warning there is still too little diagnostic testing, while the White House forecast a staggering jump in the nation’s monthly jobless rate.

Merck & Co. Inc., Pfizer Inc., and Eli Lilly and Company announced medical service volunteer programs to enable employees who are licensed medical professionals to aid in the fight against COVID-19 while maintaining their base pay.

Forcing patients off opioid painkillers could sometimes do more harm than good, international medical experts warn in an open letter to health authorities.