Coronavirus cases and hospitalizations in the United States remain low, but are slowly rising again, driven by outbreaks in areas of the center, south, and west of the country, and by small increases almost everywhere else.
The highly contagious Delta variant, which now accounts for the majority of new cases in the United States, has spread rapidly, fueling the national rebound. But because vaccines are effective against the variant, especially serious diseases, new cases and hospitalizations are increasing mainly in places with low vaccination rates.
Public health experts expect this trend to continue, putting the country’s vaccinated and unvaccinated on very different paths in the next phase of the pandemic. While nearly half of the US population is fully vaccinated, the level of protection varies widely between and within states.