PHOENIX (AP) — Arizona continues to see a slow yet steady increase in the average number of coronavirus cases reported each day as a decline that lasted through August and September reverses.

The state Health Services Department on Friday reported 738 new virus cases, bringing the total since the pandemic hit to 228,486. The state also reported 17 new deaths, bringing the total to 5,806.

Arizona was a national hotspot for the virus in June and early July, with more than 3,000 new cases a day regularly being reported. That dropped to well below 500 per day last month.

But the average daily number is now increasing, bringing warnings from some health experts. The 7-day rolling average of daily new cases in Arizona has risen over the past two weeks from 480 new cases per day on Oct. 1 to 764 new cases per day on Thursday.

Thursday also saw the first daily tally above 1,000 in a month.

For most people, the coronavirus causes mild or moderate symptoms, such as fever and cough that clear up in two to three weeks.

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

In other developments:

— The Navajo Nation, which sprawls across New Mexico, Arizona and Utah, on Friday reported 38 new COVID-19 cases and no recent deaths. The total number of deaths remains 571, and the total number of cases is now 10,857.

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