The European Center for Disease Prevention and Control said the number of unusual pediatric hepatitis cases reached 450, double the number reported two weeks earlier.

President Joe Biden on May 12 commemorated the death of 1 million people in the United States from COVID-19, marking what he called “a tragic milestone” and urging Americans to “remain vigilant” amid the ongoing pandemic.

North Korea reported the country’s first COVID-19 outbreak on May 12, calling it the “gravest national emergency” and ordering a national lockdown, with state media saying an Omicron variant had been detected in the capital, Pyongyang.

Patients diagnosed with cancer more than a year before contracting COVID-19 and those not receiving active treatment may be no more vulnerable to worse COVID outcomes than those without cancer, according to a new study. Additionally, researchers warned that passengers are still at risk of coronavirus infection while traveling on airplanes and also in airports.

Shanghai is tightening an already strict COVID-19 lockdown in a fresh push to eliminate infections outside quarantined areas of China’s biggest city by late this month, people familiar with the matter said.

Valneva said on May 4 the French drugmaker will conduct a trial about the use of the company’s COVID-19 vaccine candidate VLA2001 as a booster jab following a mRNA vaccination or natural infection.

COVID-19 cases in the Americas increased by 12.7 percent last week from the prior week, the Pan American Health Organization (PAHO) said on May 4, as infections continued to rise in Central and North America.

The U.S. Food and Drug Administration approved Phathom Pharmaceuticals Inc.’s Voquezna Triple Pak (vonoprazan tablets, amoxicillin capsules, clarithromycin tablets) and Voquezna Dual Pak (vonoprazan tablets, amoxicillin capsules) for the treatment of Helicobacter pylori infection in adults.

Pfizer Inc. on April 29 said a large trial found that the company’s COVID-19 oral antiviral treatment Paxlovid was not effective at preventing coronavirus infection in people living with someone infected with the virus.

Following the record surge in COVID-19 cases during the Omicron-driven wave, some 58 percent of the U.S. population overall and more than 75 percent of younger children have been infected with the coronavirus since the start of the pandemic, according to a U.S. nationwide blood survey released on April 26.