Arizona, Florida, Oklahoma, Oregon and Texas all reported record increases in new cases on Tuesday after recording all-time highs last week. Nevada also reported its highest single-day tally of new cases on Tuesday, up from a previous high on May 23. Hospitalizations are also rising or at record highs.

At Arizona’s Tucson Medical Center on Monday, just a single intensive care unit (ICU) bed designated for COVID-19 patients was available, with the other 19 beds filled, a hospital representative said.

“ICU to be expanded, hopefully, in coming days,” Dr. Steven Oscherwitz, an infectious disease expert at the hospital, said in a tweet on Monday night. “Not sure where people needing ICU care will be able to go, since most AZ (Arizona) hospitals are pretty full now.”

Health officials in many states attribute the spike to businesses reopening and Memorial Day weekend gatherings in late May.