Effective Aifd News Today

Omicrons subvariant ba.2 now accounts for nearly 4% of new cases in the u.s. >> even if the united states is highly vaccinated but other countries remain unvaccinated, that leads to variants that can accumulate, cause us to have surges. >> reporter: but tonight a turning point for the u.s. where cases are down 65%. several states announcing a plan to end mask mandates. among them california where effective aifd. though counties like los angeles and san say masks will still be required as they ar...