https://www.npr.org/sections/health-shots/2023/05/02/1172806898/why-viral-reservoirs-are-a-prime-suspect-for-long-covid-sleuths “Other scientists trying to uncover the roots of #LongCOVID have asked some version of that same question for the last few years now. This theory of "#ViralPersistence" posits that some people never fully eliminate the infection, that #ViralReservoirs are subsisting in the body and possibly triggering the symptoms of long COVID.”