'It’s a concern but it’s not unexpected' | What UC Davis Health wants you to know about the Delta variant UC Davis Medical Center had less than 10 patients with COVID-19 on any given day in June, but now with the Delta variant, it's ranging from 18-25 patients daily. Author: Izzy Greenblatt Updated: 11:23 PM PDT July 22, 2021 SACRAMENTO, Calif. — With an increase in COVID-19 cases locally and nationally, UC Davis health experts are concerned a new surge could happen in the Sacramento area with there being a low vaccination rate. In a press release from UC Davis Health, it was pointed out that the UC Davis Medical Center had less than 10 patients with COVID-19 on any given day in June, but now with the Delta variant, patient numbers are ranging from 18-25 patients daily. Health experts don't believe those case numbers will fall anytime soon.