One expert says the answer may involve looking at previous vaccines individuals have had. It's what immunologists call immune training: how your immune system creates an effective response to fight off infections, Badley says. There's been no definitive evidence of any other vaccines boosting immunity against Covid-19. The report, expected to be updated weekly, said 179,990 new Covid-19 cases were recorded among US children from July 9 to August 6. The second trial will test to see how the Eli Lilly and Co.'s LY-CoV555 antibody treatment works with people who work or live at a nursing home or assisted living facility that's had a positive case.

Source: CNN August 11, 2020 07:07 UTC