Re-infection must be confirmed as a separate infection and not the re-appearance of the same infection.
Kambeba indigenous nurse technician Neurilene Cruz, 36, conducts tests for the coronavirus disease (COVID-19) on indigenous Tome Cruz, 36, on the banks of the Negro river at the village of Tres Unidos, Amazon state, Brazil, May 21, 2020(photo credit: BRUNO KELLY/REUTERS)ByREUTERS