US intelligence agencies remain divided on the origin of COVID. In the NYT we read about current research on a virus which could infect humans and could be even more deadly than COVID-19. The problem is that the research is being done at a lab safety level of BSL-2 rather than BSL-3 as would be the case in the US.
In a series of experiments, the scientists show that this virus, HKU5-CoV-2, can efficiently infect cells of humans and a wide range of other animal cells. The findings raise the possibility that humans and other animals could be infected by this virus. This coronavirus belongs to a subgroup of viruses that are classified alongside the one that causes MERS and that can have fatality rates far higher than that of the virus that caused the Covid pandemic…
The researchers behind the Cell paper began by studying the new virus in ways that do not require growing live virus — like through computer analysis. But after establishing that the virus can probably infect human cells, the researchers performed experiments with the fully infectious virus. They did not conduct these experiments in a BSL-3 or BSL-4 laboratory but in a laboratory described as BSL-2 plus, a designation that is not standardized and not formally recognized by the Centers for Disease Control and Prevention and that we think is insufficient for work with potentially dangerous respiratory viruses.
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