US reports first case of Omicron variant in returning traveller
The US recorded its first confirmed case of the Omicron variant Wednesday — in a vaccinated traveller who returned to California after a trip to South Africa — as scientists around the world race to establish whether the new, mutant version of the coronavirus is more dangerous than previous ones.
Dr Anthony Fauci, the United States’ top infectious-disease expert, announced the finding at the White House.
“We knew it was just a matter of time before the first case of Omicron would be detected in the United States,” he said.
The infected person was identified as a traveller who had returned from South Africa on November 22, developed mild symptoms and tested positive for COVID-19 Monday. Researchers at the University of California, San Francisco obtained a sample from the patient Tuesday evening and worked feverishly overnight to assemble the genetic sequence.
The person, who had had the full two doses of the Moderna vaccine and wasn’t yet due for a booster shot, is improving, California officials said.
Fauci and other medical experts strongly emphasised that Americans should continue to get vaccinated and get their booster shots. The vaccine has been proven to reduce the risk of severe illness and death, and Fauci said it is reasonable to believe it will offer protection against the Omicron variant.
The mild nature of the California person’s infection “is a testimony to the importance of the vaccinations,” said California Health Secretary Dr Mark Ghaly.
All the individual’s close contacts have been reached and have tested negative, officials said. The patient, who agreed to remain in quarantine, was identified only as being between 18 and 49.
California Governor Gavin Newsom expressed confidence in the state’s efforts to control the virus and said he does not anticipate imposing another stay-at-home order or other shutdown measures.
At least 23 other countries have reported Omicron infections since South African authorities first identified the variant a week ago — an announcement that led the US and many other nations to almost immediately bar airline travelers arriving from southern Africa.
In South Africa, new cases of COVID-19 nearly doubled in a single day to almost 8,600, authorities reported Wednesday, and the country’s National Institute for Communicable Diseases said Omicron has now overtaken the Delta variant among samples now being analysed at the genetic level.
But the variant is still surrounded by many unknowns, among them: Is it more contagious than other versions, as some scientists are beginning to suspect? Does it make people more seriously ill? And can it evade the vaccine?