More than 1 million people have died from Covid-19 in North and South America, the Pan American Health Organization (PAHO) said.

Hours after being sworn in as the 46th President of the United States, Joe Biden signed 10 executive orders aimed at combating the ongoing Covid-19 crisis.

The microscopic organisms living in our intestines may influence the severity of Covid-19 and the body’s immune response to it, and could account for lingering symptoms, researchers reported.

The number of coronavirus deaths in the United States crossed 300,000 on Dec. 14, according to a Reuters tally, as the hardest hit nation rolled out its first vaccine inoculations on the same day.

Five key genes are linked with the most severe form of Covid-19, scientists said, in research that also pointed to several existing drugs that could be repurposed to treat people who risk getting critically ill with the pandemic disease.

California compelled much of the state to close shop and stay at home on Dec. 7, when some of the harshest coronavirus restrictions in the United States came into effect one day after the state set a record with more than 30,000 new Covid-19 cases.

The United States set single-day records for new infections and deaths as California’s governor said he would impose some of the nation’s strictest stay-at-home orders in the coming days when intensive care units are expected to reach capacity.

A brief roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for Covid-19, the illness caused by the virus.

Seniors who get a flu shot every year are less likely to be hospitalized with severe influenza infections or to die from them than those who get vaccinated only sporadically, a study suggests.