Nature Communications (Nov 2022)
Viral load dynamics of SARS-CoV-2 Delta and Omicron variants following multiple vaccine doses and previous infection
Abstract
COVID vaccination can reduce virus levels in breakthrough infections, which in turn may reduce transmission of the virus. By using qRT-PCR cycle threshold as a surrogate of virus levels, the authors here show that this positive effect of vaccination wanes relatively quickly for Omicron breakthrough infection.