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YOSEMITE NATIONAL PARK — With no confirmed case of the coronavirus, Yosemite National Park appeared to be a safe haven from the pandemic.
But tests of the park’s raw sewage have confirmed the presence of the virus, the San Francisco Chronicle reported Saturday, and dozens of people are believed to have been infected.
No park employee or resident has tested positive at the park’s health clinic, and no visitors have reported being sick since Yosemite began a phased reopening on June 11 after being closed for nearly three months.
Working with the National Park Service, Mariposa County health officials began taking samples of untreated wastewater and sent it to a lab in Cambridge, Massachusetts, for analysis. The lab, Biobot Analytics, told the county this week that based on how much of the virus they counted, it’s possible about 170 people were infected in Yosemite Valley.
Eric Sergienko, the county’s health officer who is overseeing coronavirus testing in the Yosemite area, attributed the emergence of the coronavirus in Yosemite to the region’s many visitors. He said its presence will not likely lead to policy changes because the park is already following local and state restrictions.
For Most People, the New Coronavirus Causes Mild or Moderate Symptoms
Yosemite, which typically attracts more than 4 million visitors each year, is cutting the number of vehicle passes to the park by half. Visitor centers remain closed, while campgrounds, gift shops and hotels are limiting services to allow for physical distancing. After Gov. Gavin Newsom ordered statewide restrictions on Monday to halt indoor dining due to a spike in COVID-19 cases across California, additional park facilities, such as restaurants, scaled back operations.
Sergienko said he believes the confirmed presence of the virus in Yosemite will make people more vigilant.
“We know the problem is here. We know the challenge is here. Now we have to be serious about facing it,” he said.
For most people, the new coronavirus causes mild or moderate symptoms, such as fever and cough that clear up in two to three weeks. For some — especially older adults and people with existing health problems — it can cause more severe illness, including pneumonia, and death.
In Other News About the Outbreak in California
1. California reported on Saturday its fourth-highest daily total of newly confirmed coronavirus cases, with more than 9,000. The state also reported an additional 120 deaths.
2. The number of coronavirus cases at a San Francisco Bay Area jail more than doubled in 24 hours, jumping from 40 to 101 cases. The Alameda County Sheriff’s Office said Friday the outbreak swept through two housing units at Santa Rita Jail and that the majority of cases were asymptomatic.
3. The Navy said Friday at least two sailors have tested positive after fighting a massive fire aboard the amphibious assault ship USS Bonhomme Richard at Naval Base San Diego. At least 27 people who were in contact with them are in quarantine. The fire broke out on July 12 and heavily damaged the ship.
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