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.

Moderna Inc. asked U.S. regulators to authorize the company’s COVID-19 vaccine for children under the age of 6, which would make it the first shot against the coronavirus available for those under 5-years-old.

Health authorities around the world are investigating a mysterious increase in severe cases of hepatitis – inflammation of the liver – in young children.

Maybe Spider-Man was on to something. Although spider silk and synthetic forms have been used for a wide range of applications – including bullet-proof clothing, biodegradable bottles, and bandages and surgical thread – new research suggests it may have a use for cancer therapies.