Diseases, Conditions, Syndromes

COVID-19 hospitalizations tumble among US senior citizens

COVID-19 hospitalizations among older Americans have plunged more than 70% since the start of the year, and deaths among them appear to have tumbled as well, dramatic evidence the vaccination campaign is working.

Diseases, Conditions, Syndromes

About a third of Mexicans show exposure to coronavirus

As many as one-third of Mexicans may have been exposed to the coronavirus by the end of 2020, according to a study of random blood samples taken between February and December.