Nov. 29, 2021
Two-dose vaccines are typically spaced months and sometimes years apart to provide long-lasting protection from disease. As children begin to get their COVID-19 shots, emerging research in adults suggests that waiting longer between doses could have similar benefits. The first COVID-19 shot generates memory B cells, which help fight infection. Over time, the stronger memory B cells survive while the weaker ones die, notes Deepta Bhattacharya, a professor of immunobiology at the University of Arizona College of Medicine – Tucson.