CNN – Health

By Jacqueline Howard, CNN Vaccine makers are preparing for a next possible phase of the Covid-19 vaccine rollout: booster doses. The biopharmaceutical company Pfizer announced on Thursday that it has seen waning immunity from its coronavirus vaccine — although efficacy in preventing serious illness remains high — but did not detail the evidence. It said

By Jamie Gumbrecht, CNN US Food and Drug Administration Acting Commissioner Dr. Janet Woodcock on Friday requested an investigation by the US Department of Health and Human Services Office of Inspector General into the controversial approval of the Alzheimer’s disease drug Aduhelm. In a letter posted on Twitter, Woodcock said an independent review and assessment

By Melanie Radzicki McManus, CNN There is nothing quite like an alfresco workout, with its fresh air and changing scenery. But when temperatures soar, beware. Exercising in hot weather stresses your body, especially if the humidity is high. If you do not take proper precautions, it can actually be dangerous, and potentially lethal. The number

By Lauren Mascarenhas, CNN The US Centers for Disease Control and Prevention on Friday updated its Covid-19 schools guidance to emphasize in-person schooling is a priority in the fall, regardless of whether all mitigation measures can be implemented. As K-12 schools will have a mix of vaccinated and unvaccinated people, the agency says it’s still

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 variant takes over as the dominant coronavirus strain, health officials in Los Angeles County said. “We do continue to see an uptick in cases and hospitalizations,” Los Angeles County Public Health

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 shows, as health experts and the federal government keep pressing for more people to get vaccinated. The rapid spread of the Delta variant of the coronavirus has only ratcheted up

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 develop a booster dose that will protect people from variants. Pfizer said it would soon publish data about a third dose of vaccine and submit it to the US

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 is clearly more transmissible, but it is unclear if it causes more severe disease. It’s taken over from the B.1.1.7 or Alpha variant in most of the countries

By Jacqueline Howard, CNN The US Food and Drug Administration has narrowed the group of Alzheimer’s disease patients who should receive the controversial drug aducanumab, sold as Aduhelm. The FDA approved changing the drug’s label to clarify that the treatment is intended specifically for patients with mild cognitive impairment or milder stages of disease, according

By Lauren Kent, CNN Flossing your teeth isn’t just important for keeping your dentist happy — it may also protect against cognitive decline. Good oral health habits like brushing and flossing may prevent cognitive impairment and dementia, according to a new analysis led by researchers at NYU Rory Meyers College of Nursing. “Given the staggering

By Deidre McPhillips, CNN Covid-19 vaccines saved hundreds of thousands of lives and prevented more than a million hospitalizations in the United States, according to new estimates from researchers at Yale University and the Commonwealth Fund. The researchers compared actual trends in Covid-19 cases, hospitalizations and deaths against a modeled trajectory of what those trends

By Elizabeth Cohen and John Bonifield, CNN A new data analysis identifies clusters of unvaccinated people, most of them in the southern United States, that are vulnerable to surges in Covid-19 cases and could become breeding grounds for even more deadly Covid-19 variants. The analysis by researchers at Georgetown University identified 30 clusters of counties

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 melanoma, according to a new report published Thursday. But America’s collective lack of exercise and poor diet may have driven increases in certain other cancers, including pancreatic cancer and

By Katia Hetter, CNN The Delta variant, a more transmissible — and potentially more dangerous — strain of coronavirus, now makes up more half of all new infections in the United States, according to the US Centers for Disease Control and Prevention. This variant, combined with low rates of vaccination in many parts of the