RIVERSIDE COUNTY, CA — While Riverside County residents await updated figures Tuesday, local health officials have reported a half-dozen coronavirus deaths and 147 additional cases, bringing the death toll to 25 and the total number of confirmed cases to 946.

They also said they expect the number of COVID-19 deaths will rise as cases are viewed for possible connections, noting that the six newly reported fatalities were confirmed as related to the disease after the patients died. "What's important to note about these deaths is that these were confirmed after death — that's post-mortem — and that was going through a review of coroner's records and disease control records to review the death certificates and cause of death," Riverside County spokeswoman Brooke Federico said in a briefing that was streamed on Facebook Live.

"It likely shows, as Dr. (Cameron) Kaiser had noted, that we do have a little bit of an undercount in our death totals," Federico said. Recoveries remain at 60, the same as Sunday.

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Federal, state and local officials continue to warn of an upcoming surge in cases and deaths. Dr. Geoffrey Leung of the Riverside University Health System said Friday that could mean 65,000 cases, 11,000 hospitalizations and 1,000 deaths due to COVID-19 by the beginning of May in Riverside County.

Leung, however, offered a ray of hope. In addition to staying home and frequent hand-washing, Leung said, four other solutions could help Riverside County "flatten the curve": testing, enforcement, face coverings and closing all nonessential businesses and gathering places.

"If we can do one of these things well ... we believe we can decrease the number of cases and deaths by 50 percent. If we can do three of these things well, we believe we can decrease the hospitalizations, the cases and the deaths by 75 percent, saving nearly 700 or 800 lives or more," Leung said. "But we have to do them well, and we have to do them now."

On Sunday, county health officials announced at least 30 patients and some staff at a Riverside skilled nursing facility tested positive for COVID- 19. That number could climb, as test results are still pending for other patients and employees at the Extended Care Hospital in Riverside, Federico said. Also over the weekend, Riverside County's public health officer barred all outside gatherings, except for those between family members residing in the same home, and ordered anyone leaving home to wear a face covering.