Coronavirus

matterDozens of research groups around the world are playing the long game, convinced that their experimental vaccines will be cheaper and more powerful than the ones leading the race today.A volunteer received an experimental coronavirus vaccine in Soweto, South Africa. Some researchers worry about unproven approaches to such vaccines.Credit...Luca Sola/Agence France-Presse — Getty ImagesAug. 27,…

Women produce a more powerful immune response than do men, a new study finds.In a hospital in La Mesa, Calif., earlier this year, a nurse held a phone to the ear of a patient with coronavirus so he could listen to his daughter speak. Credit...Etienne Laurent/EPA, via ShutterstockAug. 26, 2020, 5:00 a.m. ETThe coronavirus may infect…

At least three people this week were infected with COVID-19 a second time, throwing into question what we know about immunity to the deadly virus. While reinfections have been reported in the past, including some in South Korea in May, it later emerged that the cases were likely a result of false positives during testing.…

The Centers for Disease Control and Prevention (CDC) now says asymptomatic people no longer need to get tested for the novel coronavirus, a quiet change the federal agency recently made to its online guidelines regarding COVID-19.“You do not necessarily need a test unless you are a vulnerable individual or your health care provider or state or local…

(CNN)It's been two and a half weeks since a wedding in Maine sparked an outbreak of the coronavirus among guests. Since then, the virus has spread so fast, Maine Center for Disease Control and Preve…