Viral Load Dynamics in SARS-CoV-2 Omicron Breakthrough Infections.

J Infect Dis

Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.

Published: November 2022

To determine viral dynamics in Omicron breakthrough infections, we measured severe acute respiratory syndrome coronavirus 2 RNA in 206 double-vaccinated or boostered individuals. During the first 3 days following the onset of symptoms, viral loads were significantly higher (cycle threshold [Ct], 21.76) in vaccinated compared to boostered (Ct, 23.14) individuals (P = .029). However, by performing a longitudinal analysis on 32 individuals over 14 days, no difference in the viral load trajectory was observed between double-vaccinated and boostered patients. Our results indicate that booster immunization results in a reduction in detectable viral loads without significantly changing viral load dynamics over time.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9384619PMC
http://dx.doi.org/10.1093/infdis/jiac290DOI Listing

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