As of Sunday afternoon, the number of Siskiyou County coronavirus cases remained at six, unchanged since Monday, according to public health officials. in all of those cases, the patients have recovered.

Siskiyou health officials estimate 1,398 COVID-19 tests — enough to service 3.2% of the county's residents — had been conducted as of Friday morning. That count excludes pending tests.

Mountain Valleys Health Centers is offering drive-up testing on Thursday at Butte Valley Health Center in Dorris. For more information, call 999-9010.

Two medical facilities now offer screening to essential workers.

Fairchild Medical Center will conduct tests for that group, including first responders. Workers wishing to be tested can call 841-6287 to schedule an appointment.

Screenings by Mercy Medical Center in Mount Shasta also are available by appointment on Tuesdays and Wednesdays at 902 Pine St. For information, call 926-7132. 

Patients don't incur out-of-pocket costs for the tests, according to a Dignity Health spokeswoman.

In Shasta County, Sunday marked the second straight day with no new coronavirus cases. Lassen County, meanwhile, also on Sunday confirmed two more people have the contagious respiratory illness, bringing its count to four known cases of the virus.

The rural county reported its first two cases late Friday night.At least 747 tests had been done, with 334 of those tests still pending on Sunday night, according to the Lassen Cares website. 

In one other Lassen County case, a patient tested positive for the antibodies to the virus. It was the first of 70 serology tests that screen for antibodies to see if someone is infected with the coronavirus.

While there were no new cases in Shasta County, four people remained in isolation and 18 were in quarantine, according to the Shasta County Health and Human Services.

The last day Shasta County health officials announced new cases was Friday, when two new patients were found.

The latest Shasta County coronavirus patients include a woman in her 30s and a woman in her 40s, both of whom were in isolation at home, according to the county's Health and Human Services Agency.

There have been 36 cases of coronavirus in Shasta County and four people have died, officials said. As of Sunday, there were no COVID-19 patients in the hospital, and 4,136 tests had been administered, officials said. 

With the Memorial Day holiday weekend underway, county health officials cautioned that now isn't the time to ease up on guidelines limiting gatherings and non-essential travel.

"We must still protect our vulnerable neighbors, including people age 65 and older or those with underlying medical conditions," read an HHSA press release. "They should still remain at home as much as possible."

Other Northern California counties

Tehama and Colusa counties each reported one additional COVID-19 case on Friday, while Humboldt and Butte counties each reported three more cases on Friday. As of Saturday evening, none of the counties had reported additional cases.

Tehama County's latest patient is a woman in her 50s, according to health officials.

In far Northern California, here's where COVID-19 case totals stand, as of Saturday afternoon:

Shasta County, 36 cases

Butte County, 34 cases

Glenn County, 12 cases

Siskiyou County, 6 cases

Colusa County, 5 cases

Plumas County, 4 cases

Tehama County, 3 cases

Trinity County, 1 cases

Lassen County, 5 cases

Modoc County, no cases

Coastal Counties:

Humboldt County, 93 cases

Del Norte County, 23 cases

Mendocino County, 21 cases

COVID-19 in California

Statewide, the total number of confirmed COVID-19  cases rose to 92,710 on Saturday, the California Department of Public Health reported Sunday.

California's death toll stands at 3,774 since the COVID-19 outbreak began.

Health-care workers made up 9,272 of California's confirmed COVID-19 cases, according to state officials. Of that number, 51 have died.

Here is how California’s coronavirus cases break down by age:

Age 0-17: 4,462 cases

Age 18-49: 47,331 cases

Age 50-64: 22,361 cases

Age 65+: 18,424 cases

Unknown/missing: 132 cases

U.S. and global case numbers

As of 6:30 p.m. Sunday, the number of confirmed coronavirus cases in the United States was 1.6 million, according to Johns Hopkins University. That number includes more than 97,700 people who died as a result of the virus, and more than 366,700 people who recovered from it.

Worldwide, the number of confirmed cases stood at 5.4 million. Of that total, more than 345,000 people died and more than 2.1 million people have recovered.