- Some early studies have suggested that coronavirus antibodies fade relatively quickly, but that doesn’t mean immunity vanishes.
- A new study found that all participants infected with COVID-19 — even those with asymptomatic or mild cases and patients who didn’t have detectable antibodies — developed virus-specific T cells.
- T cells identify and kill infected cells, and B cells create new antibodies. Those cells can attack the virus if it ever returns.
- So the new finding is strong evidence that all patients likely develop long-term immunity.