This post was updated at 5:30 p.m.

Today Maryland recorded the highest number of new cases of the coronavirus in more than a month, as Governor Larry Hogan expressed concern about the high infection rate among young people.

The state tallied 733 new cases this morning, its largest count since June 5. The state’s seven-day average also continued increasing, reaching 552 today — its highest point since the middle of June. The current high for a seven-day moving average dates back to early May, when it topped 1,000.

In a letter today, Hogan said an increasing number of cases have been linked to bars and restaurants not complying with the state’s coronavirus restrictions.

“You have the responsibility to enforce these laws,” Hogan wrote to county leaders. “We cannot allow a small segment of willful violators to squander the collective efforts of the overwhelming majority of Maryland citizens and businesses.”

The state’s positivity rate — the proportion of positives out of the total number of people tested — has begun to tick up in the past few days after steadily declining for months. It stands at 4.64%. The positivity rate for people under age 35, however, is now 84% higher than for those 35 and older.

Other metrics are mixed. Hospitalizations are up 29 patients today to 415 in all; they’ve trended down since May but there’s been an increase in four out of the past six days. Deaths continue to fall. The state saw nine COVID-19 fatalities today.

Prince George’s County, which has the highest number of cases in the state and the second-highest toll after Montgomery County, announced that it will test all public safety employees for COVID-19 in the coming days.

Virginia is also seeing some concerning trends. It recorded another 801 cases today, down from the past four days but otherwise the highest number since June 7.

The commonwealth saw its highest new case count in over a month on Friday and topped it again Monday with 972 cases. Meanwhile Northern Virginia, which has been the hardest-hit, recorded its lowest caseload in more than three months Monday. Excluding the northern region, the caseload in the rest of Virginia has risen each day in the past week, from a seven-day moving average of 397.9 cases on July 7 to 669 on July 14.

Virginia’s positivity rate has also risen to 6.9% as of July 10, the latest day for which we have data.

Nine more people have died, 1,977 in all.

Virginia has continued easing restrictions in recent weeks and moved to Phase Three of its reopening plans on July 1. For now Maryland and the District have opted to remain in Phase Two.

Meanwhile in the District, there have been no new deaths from the virus for the fifth day in a row. So far 568 people have died.

D.C. tallied another 40 cases this morning, down from the past four days, for 10,946 known infections in all. Broadly, however, cases have been trending up in the past week.

Its positivity rate stands at 2.7% as of July 6, the latest day for which the city has provided data, and has been trending down, with several spikes.

This post was updated to include information about Maryland’s seven-day average of COVID-19 cases.