Here is a guide to the various Omicron subvariants of COVID-19.
Fortunately, the illnesses caused by omicron have typically been less severe than those caused by previous variants — a pattern that seems to hold for all the subvariants studied so far. One analysis from Denmark showed that BA.2, show “no evidence to suggest that it is more worrisome than the original omicron, other than a potentially slight increase in transmissibility,” said Brooke Nichols, an infectious-disease mathematical modeler at Boston University.
Dennis Cunningham, the system medical director of infection control and prevention at Henry Ford Health in Detroit,that the symptoms from the omicron subvariants “have been pretty consistent. There’s less incidence of people losing their sense of taste and smell. In a lot of ways, it’s a bad cold, a lot of respiratory symptoms, stuffy nose, coughing, body aches, and fatigue.
While some people who had BA.1 have also gotten BA.2, the initial research suggests that infection with BA. 1 “provides strong protection against reinfection with BA.2,” the World Health Organization“This may explain why our BA.2 surge in the U.S. was not that large as the very large BA.1 surge over the winter,” Gandhi said.
The level of protection can vary depending on how sick you were, with mild cases boosting immunity for perhaps a month or two and recovery from a severe illness granting up to a year.Although the current vaccines and boosters aren’t quite as successful in protecting against omicron as they are against earlier variants, they will generally protect people from severe disease if they are infected by one of the new subvariants.
“We’re steady as she goes with the vaccines we’re using,” said Dr. William Schaffner, a professor of preventive medicine and health policy at Vanderbilt University. “I have not seen a single study from the field that shows a substantial distinction between the vaccine responses to omicron subvariants.”
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