Health

By Lauren Mascarenhas, CNN The US Centers for Disease Control and Prevention on Friday updated its Covid-19 schools guidance to emphasize in-person…

By Aya Elamroussi and Dakin Andone, CNN The most populous county in the US is seeing “exponential growth” of Covid-19 cases as the Delta…

By Maggie Fox, CNN Drugmaker Pfizer said Thursday it is seeing waning immunity from its coronavirus vaccine and says it is picking up its efforts to…

By Maggie Fox, CNN The Delta variant of coronavirus is now the dominant lineage in the US, parts of Europe and elsewhere. Also known as B.1.617.2, it…

By Jacqueline Howard, CNN The US Food and Drug Administration has narrowed the group of Alzheimer’s disease patients who should receive the…

By Lauren Kent, CNN Flossing your teeth isn’t just important for keeping your dentist happy — it may also protect against cognitive…

By Deidre McPhillips, CNN Covid-19 vaccines saved hundreds of thousands of lives and prevented more than a million hospitalizations in the United…

By Elizabeth Cohen and John Bonifield, CNN A new data analysis identifies clusters of unvaccinated people, most of them in the southern United…

By Virginia Langmaid, CNN US death rates from cancer continued to decline from 2014 to 2018, driven mostly by drops in deaths from lung cancer and…

By Katia Hetter, CNN The Delta variant, a more transmissible — and potentially more dangerous — strain of coronavirus, now makes up more…

By Aya Elamroussi, CNN Twenty-four states have seen an uptick of at least 10% in Covid-19 cases over the past week, Johns Hopkins University data…

By Jacqueline Howard and Keri Enriquez, CNN The spread of the Delta coronavirus variant in the United States has some experts questioning whether it…

By Maggie Fox, CNN Calling it a “dangerous and unethical experiment,” more than 4,000 scientists, doctors, nurses and other professionals…

By Maggie Fox, CNN The coronavirus pandemic almost certainly originated from an animal, probably at a wildlife market in China, and not from a…