The state of Arizona has surpassed the 200,000 mark in COVID-19 cases as of Thursday morning.

According to the Arizona Department of Health Services, there are 200,139 cases and 4,929 deaths of the novel coronavirus in the state, up 680 and 33 from Wednesday, respectively.

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

The Maricopa County Department of Public Health is reporting 132,473 cases and 2,894 deaths in Arizona’s most populous county.

Maricopa County shows a case rate of 2,959 cases per 100,000 residents, using 2019 population estimates. The state rate is 2,750. Santa Cruz County has the highest at 5,845 cases per 100,000 residents.

As of Wednesday morning, Arizona has the fifth-lowest R-naught in the nation at 0.84, according to rt.live. Washington state is lowest at 0.76. This is the average number of people who become infected by an infectious person. Less than 1.0 is ideal, officials say.

For those living in Phoenix, the city and Vincere Cancer Center are in the community with a mobile testing van. The tests are free, but appointments are required at www.Phoenix.gov/COVIDTesting.

Over 400 testing sites are available statewide. Visit www.azdhs.gov/testing.

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.