“Of course it’s possible,” Dr. Jennifer Lighter, a pediatric infectious disease specialist at NYU Langone Health in New York, told HuffPost regarding the possibility of reinfection. But she said there’s “clearly cross-protection” (meaning an effective immune response) between delta and omicron, as well as between BA.1 and BA.2. The exact timeline is imprecise, but experts tend to think you’ve got about 90 days of solid protection after infection.
Article source: https://www.huffpost.com/entry/ba2-omicron-covid-reinfection_l_62420337e4b03516d4261411