Just how much harm repeat infections will cause is a matter of debate. “There are some almost pathologically polarized opinions out there,” says Danny Altmann, an immunologist at Imperial College London. One side argues that SARS-CoV-2 is a run-of-the-mill respiratory virus, no worse than the common cold, especially for those who have been vaccinated. Others have said that repeatedly getting COVID-19 is a gamble.
Cassandra Willyard