Omicron sub-variants may target lungs, evade vax and prior infection: Studies

Sato’s experiments indicate that BA.4, BA.5 and BA.2.12.1 replicate more efficiently in human lung cells than BA.2, while further experiments in hamsters suggest that BA.4 and BA.5 may cause more serious disease, the report said. .

“Looks like these things are switching back to the more dangerous form of infection, so lower in the lungs,” said Dr. Stephen Griffin, a virologist at the University of Leeds, says.

This could also be the case in India, where patients show more severe symptoms than during the earlier Omicron wave, Dr. Neha Gupta, Consultant Infectious Disease, Fortis Memorial Research Institute, Gurugram, to IANS.

India reported 13,313 new cases of Covid-19 and 38 deaths in the past 24 hours on Thursday, according to data from the health ministry.

“During this wave, we have seen patients with moderate to severe Covid-19, which is slightly more severe compared to the Omicron variant,” Gupta said.

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