New daily cases in Arizona remained under 1,000 for a second straight day after the latest updates from the state Department of Health Services.

In Arizona, there are 187,523 cases and 4,154 deaths of the novel coronavirus, up 600 and four from Sunday morning, respectively. However, Monday’s numbers are usually lower compared with other days.

The number of cases could be far higher because many people have not been tested, and some can be infected without feeling sick.

Maricopa County shows a case rate of 2,785 cases per 100,000 residents, using 2019 population estimates. The state rate is 2,576. Santa Cruz County has the highest at 5,701 cases per 100,000 residents.

As of Monday, Arizona had the lowest R-naught in the nation at 0.82. Neighboring New Mexico is next at 0.86. This is the average number of people who become infected by an infectious person. Less than 1.0 is ideal, officials say.

According to data from Johns Hopkins University, the seven-day rolling average of daily new cases in Arizona dropped during the past two weeks, going from 2,618.71 new cases per day on July 23 to 1,835.57 new cases per day on Aug. 6.

Sunday was the first time since June 8 that fewer than 1,000 new cases (816) were reported. The state reported 625 new cases on June 29, but a reporting partner missed the deadline to be included in the cases that day.

The rolling seven-day average for newly reported cases was 1,300.71 on Saturday, the lowest since June 16. The seven-day average of newly reported deaths was 55.71.

The coronavirus causes mild or moderate symptoms such as fever and cough for most people. The vast majority of people who are diagnosed with COVID-19 recover.

But for some — especially older adults and people with existing health problems — it can cause more severe illness including pneumonia, and death.

The Associated Press contributed to this report.