New cases of the coronavirus in the United States dropped 16% last week to nearly 409,000, the biggest percentage fall in weekly new cases since February, according to a Reuters analysis of state and county data.

Fatalities from COVID-19 dropped 4% to 4,972 in the week ended April 25, falling below 5,000 for the first time since October.

Michigan still led the states in new infections per capita, though new cases fell 29% last week compared to the previous 7 days. New cases also fell by over 20% in New Jersey and Pennsylvania, the states with the next highest rates of infection based on population.

New infections are still rising on a weekly basis in 12 out of 50 states, down from 30 states last month. The states with the biggest percentage increases are Tennessee, Arizona and Oregon.

As of Sunday, 43% of the U.S. population has received at least one shot of a coronavirus vaccine, and 29% was fully inoculated, the United States Centers for Disease Control and Prevention said.

Nationally, the pace of vaccinations fell 14% from the previous week to an average of 2.7 million doses per day.

According to the Reuters analysis, the average number of COVID-19 patients in hospitals across the country held steady at around 41,000.