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COVID-19 vaccination prevented an estimated 2.5 million deaths globally from December 2020 to October 2024. People ages 60 years and older accounted for nearly 90% of that mortality benefit. Children ...

Long COVID remains a frustrating medical mystery, affecting up to 1 in 10 people long after the initial infection fades. Now, scientists have uncovered a crucial clue hidden deep within the immune ...

Add Yahoo as a preferred source to see more of our stories on Google. The mystery of what causes the "brain fog," fatigue, chest pain and other symptoms of long COVID-19 has been traced to a set of 32 ...

Share on Pinterest Two experts answer key questions about the recent COVID-19 vaccine guideline changes. Image credit: MR.WUTTISAK PROMCHOO/Getty Images. Health Secretary Robert F. Kennedy Jr.

Targeted interventions at patient, provider, and health system levels can optimize COVID-19 management in disproportionately affected communities. Multilevel assessments revealed increased vaccination ...