Nearly 60 percent of Americans now have antibodies from Covid-19 infection

The Omicron BA.2 subvariant now accounts for most of the cases in the country, with the number of cases on the rise in the Northeast.

CDC officials said on Tuesday that even those numbers don't offer a full picture of the virus' presence in the country. According to a soon-to-be-released CDC study, from December to February there were an estimated three infections per reported case, varying by region.

The rise in the presence of antibodies from 43 percent of Americans in January to 57 percent in February was faster than the CDC expected.

The fact that most Americans now have antibodies does not mean they will be protected from re-infection or any kind of group immunity, as there is still not a known threshold at which the virus stops circulating.

Up to 30% of children hospitalized with the Covid-19 can go into intensive care units and develop post-covid conditions.

She said that she would continue to recommend that children get vaccinations even if they have been previously exposed.

Only 35 percent of children aged 5 to 11 years old have received at least one dose of vaccine, and vaccinations are still unavailable for children under five years old.