More Texas hospitals are reporting a shortage of ICU beds than at any other time since the COVID-19 pandemic hit the state 18 months ago — just one sign among many that the health crisis is on track to reach its most dangerous phase yet, health officials say.

The latest surge of the virus has also caused new cases and COVID-19 hospitalizations to rise with record speed to just below their January peaks, as the highly contagious delta variant rips through the unvaccinated community at a rate up to eight times faster than earlier strains, officials said.

“We are entering the worst surge in sheer numbers,” said Dr. Mark Casanova, a palliative care specialist in Dallas and a member of the Texas Medical Association’s COVID-19 Task Force. “This is the fourth round of what should have been a three-round fight. We do have very sincere concerns that the numbers game is going to overwhelm us.”