Cologne Public Health Department Study Indicates Unvaccinated Transmit COVID-19 at 3X those of Vaccinated

Recently Cologne, Germany’s Public Health Department led a study inquiring into COVID-19 breakthrough infections. Led by corresponding author Lea Hsu with the Cologne Public Health Department Infection and Environmental Hygiene as well as the University Hospital, RWTH Aachen University, the study, “COVID-19 Breakthrough Infections, and Transmission Risk: Real-World Analyses from Germany’s Largest Public Health Department” investigated in more detail what is the actual level of breakthrough infection now occurring in this part of Germany. The study team found that the unvaccinated were transmitting the virus at three times the rate as the vaccinated. However, significant limitations must be raised including the fact that the study data didn’t capture the true impact of the Delta (and other) variants that could materially impact the rate of transmission given durability challenges reported with that variant of concern and the current COVID-19 vaccines.

Recently published in the open-access online repository MDPI “Vaccines” the study team took up the challenging question of what is the true incidence of breakthrough infections involving SARS-CoV-2 in Cologne, Germany.

The study...

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