BA.4/5 is sweeping the globe

The newest Omicron variant, BA.4/5, is gaining traction, causing case, hospitalization, and death curves to trend upwards in many countries. This variant was first detected in South Africa in early 2022 and caught our attention because it had several mutations on the spike protein. Two mutations in particular, called L452R and F486V, caught our attention because we had seen them on previous variants of concern. Recent lab and epidemiological data show BA.4/5 to be driving this wave, in part due to reinfections and infections after vaccination.

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