San Diego Zoo gorillas close to full recovery weeks after testing positive for coronavirus

The San Diego Zoo Safari Park tweeted this image in announcing on Jan. 11, 2021 that some of its gorillas have tested positive for the coronavirus.

The San Diego Zoo Safari Park tweeted this image in announcing on Jan. 11, 2021 that some of its gorillas have tested positive for the coronavirus.

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A troop of gorillas at San Diego Zoo Safari Park appears to be recovering from the coronavirus — including a 49-year-old silverback who received antibody therapy — in what is believed to be the first known cases among such primates.

The western lowland gorillas were infected with a variant that has been circulating in California and is believed to be more contagious than other strains, the safari park said Monday in a statement. Some gorillas showed symptoms including mild coughing, congestion and intermittent lethargy.

The silverback named Winston, had pneumonia, likely caused by the virus, as well as heart disease. He has been more active since being put on antibiotics and heart medication, and receiving an antibody treatment — a therapy to block the virus from infecting cells, San Diego Zoo Safari Park said in a statement.

“We’re not seeing any of that lethargy. No coughing, no runny noses anymore,” the park’s executive director Lisa Peterson told the San Diego Union-Tribune, adding that the animals’ fecal matter is no longer testing positive for the virus. “It feels to us like we’ve turned the corner.”

Officials tested the troop of gorillas after two apes began coughing on Jan. 6. Positive test results were confirmed by the U.S Department of Agriculture National Veterinary Services Laboratories in three gorillas.

The apes were likely exposed by a zookeeper who tested positive for COVID-19 in early January, officials said. The park north of San Diego has been closed to the public as part of California’s lockdown efforts to curb coronavirus cases, and the park’s wildlife care team wore masks at all times around the gorillas.

Veterinarians are preparing to inject gorillas at the San Diego Zoo with a COVID-19 vaccine, a supply made specifically for animals. They also plan to vaccinate other species believed susceptible to infection, such as felines. Wildlife in other locations — from minks to tigers — have gotten the virus.

The gorillas at the safari park will not be vaccinated for now since they have been exposed.

San Diego Zoo Global, which oversees the zoo and the safari park, plans to share what it has learned with other scientists with the hope that it will contribute to the understanding of how the virus can affect apes.

Wildlife experts have expressed concern about the coronavirus infecting gorillas, an endangered species that share 98.4 percent of their DNA with humans and are inherently social animals.

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