Dr. Amesh Adalja, senior scholar at Johns Hopkins Center for Health Security, told KHOU 11 that researchers are unsure what immunity the omicron variant gives people.

“It’s unclear, at this point, what level of immunity occurs after an omicron infection. I suspect over time, yes, you probably can get reinfected. But we don’t have that data yet because omicron has only been around since October/November.”
However, the omicron variant might offer immunity for other COVID-19 variants. For example, a study suggests that the omicron variant of the coronavirus can give immunity to the delta variant, which means the delta variant could soon lose its hold on the American people, according to Reuters.

At the same time, recent research — published online in the Journal of the American Medical Association — found that breakthrough infections of the delta variant created “a robust immune response against the delta variant.”

Researchers said this level of immunity “is likely to be highly effective against other variants as the SARS-CoV-2 virus continues to mutate.” Though the data was about the delta variant, it was suggested that this could apply to the omicron variant, too.