DALLAS (CBSDFW.COM/AP) — Texas reported more than 8,000 new cases of COVID-19 Sunday and another 111 deaths from the virus, as the pandemic continued to strain hospitals across the state.

State health officials reported 6,479 newly confirmed cases of COVID-19 and 1,671 probable cases Sunday. That brings the official totals to more than 1.3 million confirmed cases of the disease caused by the virus and 23,911 deaths.

The actual number of cases is believed to be far higher because many people haven’t been tested and some who get the disease don’t show symptoms.

More than 9,200 Texans were hospitalized with COVID-19 Sunday and hospital systems are at to close to their full intensive care unit capacity in several parts of the state, according to the Texas Department of State Health Services.

In North Texas, Dallas County reported 1,810 new cases and four deaths, bringing its total to 144,523 cases and 1,379 deaths.

Tarrant County added 1,423 cases and 20 deaths on Sunday. The county’s totals are now at 119,630 cases and 992 deaths.

The first doses of the Pfizer coronavirus vaccine are expected at Texas hospitals this week following emergency approval of the vaccine by the Federal Drug Administration on Friday.

For most people, the coronavirus causes mild or moderate symptoms that clear up within weeks. But for others, especially older adults and people with existing health problems, the virus can cause severe symptoms and be fatal.

(© Copyright 2020 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)