The results of an early phase 1 trial in 40 adults over the age of 55 suggests that one vaccine, under development by drugmaker Moderna, elicits an immune system response that's equal to that seen in younger recipients.

Black and Hispanic Americans are twice as likely to test positive for COVID-19 as White Americans, researchers report.

Sept. 29 (UPI) -- Front-line healthcare workers, children and older adults should receive priority if or when a COVID-19 vaccine is available, according to the result of a survey of U.S. adults published Tuesday by JAMA Network Open.