"New ultra-contagious Omicron subvariants BA.4, BA.5"
The Los Angeles Times interviewed Dr. Paul Simon about two new ultra-contagious Omicron subvariants among COVID-related infections.
The growing dominance of two new ultra-contagious Omicron subvariants is prolonging a wave of coronavirus cases in California and sparking growing concerns from health officials that coming weeks could see significant spread and increased hospitalizations.
BA.4 and BA.5 are now believed to be responsible for most new infections nationwide. The strains are of particular concern because they are not only especially contagious but also capable of reinfecting those who have survived earlier Omicron infection.
When it comes to BA.4 and BA.5, their “superpower is reinfection,” said Dr. Peter Chin-Hong, a UC San Francisco infectious-disease expert.
Faculty Referenced by this Article
Dr. Joseph Davey is an infectious disease epidemiologist with over 20 years' experience leading research on HIV/STI services for women and children.
Robert J. Kim-Farley, MD, MPH, is a Professor-in-Residence with joint appointments in the Departments of Epidemiology and Community Health Sciences
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