Health Highlights: Aug. 5, 2021

Here's some of HealthDay's top stories for Thursday, Aug. 5:

Moderna says its vaccine still strong after six months. A new report that is short on details says efficacy barely budged in that period, although it is unclear whether that data included the time since the Delta variant has dominated. Read more

U.S. will require COVID vaccination for foreign visitors. The Biden Administration will implement a phased-in policy where nearly all foreign visitors will have to show proof of immunization against COVID-19 in order to enter the country. The policy echoes that of recent moves by countries such as Britain and Canada. Read more

Many U.S. hospitals facing blood shortages, jeopardizing patients' lives. The American Red Cross is warning that pandemic pressures are pushing the supply of donated blood to dangerously low levels. Patients like David Beverley and his father, Peter, are caught in the crosshairs. Read more

A century-old TB vaccine might help treat severe COVID-19. The Bacillus Calmette-Guérin (BCG) vaccine has helped fight tuberculosis since 1921. New research suggests its ability to dampen runaway immune responses might prove valuable against COVID-19. Read more

'Long COVID' rare in children. There's welcome news for parents: The months-long struggle with fatigue, 'brain fog' and other symptoms experienced by some adults who survive COVID-19 is very rare in children who've been infected, researchers say. Read more

Two PrEP regimens work equally well, but price tags differ. Many people at high risk of contracting HIV take preexposure prophylaxis (PrEP) drug formulations to ward off infection. There are now two versions -- one much cheaper than the other. Which is the better choice? Read more