Omicron subvariants reflect a 'viral evolution on steroids' A new study suggests that the subvariant BA.4.6 can cause reinfections. A slew of other subvariants on the horizon may do the same. NBC News

An omicron subvariant is once again demonstrating immune-dodging abilities, posing a threat to both vaccinated and previously infected individuals.

A report published Wednesday in the New England Journal of Medicine suggests that the subvariant, called BA.4.6, could drive reinfections.

...