>If our immune systems had collectively weakened since 2020, we’d expect to see people getting sicker and dying more frequently from influenza, RSV or COVID-19, but that’s not the case. It’s more likely that we’re just “seeing the effects of three years of lack of virus circulation,” Pekosz said. LMFAO! Immune systems don't weaken from a few years of less viruses. Immune system weaken if destroyed though.