Officials later confirmed that at least 13 had the omicron variant.
Israel moved to ban entry by foreigners and mandate quarantine for all Israelis arriving from abroad.
The virus has been described as a "variant of concern" by WHO officials.
The variant appears to be spreading more rapidly among young people in their 20s and 30s, alarming health professionals.
Meanwhile, Dr. Anthony Fauci said he "would not be surprised" if the variant is already in the United States.
The new COVID-19 variant was identified in South Africa two weeks ago.
"While the new Omicron variant has yet to be detected in New York State, it's coming,” warned Gov. Kathy Hochul.
Early evidence suggests it carries an increased risk of reinfection compared with other highly transmissible variants, the World Health Organization said.
The variant, recently dubbed omicron, was first noticed in South Africa and has spread to several other nations.
The omicron strain circulating around South Africa has been flagged as a variant of concern.
The World Health Organization has declared omicron a variant of concern.
U.S. health officials say Merck's experimental COVID-19 pill is effective but they raised questions about its safety during pregnancy.
Retailers are expected to usher in the unofficial start to the holiday shopping season Friday with bigger crowds than last year in a closer step toward normalcy.
Brazil has surpassed the U.S.’s vaccination rate thanks to a robust public health system. But experts worry about the long-term effects of vaccine disinformation.
The Canadian rock star tested positive in Milan, Italy, ahead of the unveiling of the 2022 Pirelli calendar that he photographed.
He appealed to former Chief of Staff Mick Mulvaney to boot Fauci because Donald Trump was busy and "I'm an economics guy," he told Steve Bannon.
The U.S., U.K. and EU have all temporarily barred flights from certain African nations amid fears over the new coronavirus strain, omicron.
A group representing African American firefighters said members were "sickened and disgusted by this horrific display of unprofessionalism."
The 95th annual parade returned in full after being trimmed down and only televised last year due to the coronavirus pandemic.
The decision follows the state's governor, Ron DeSantis, signing a bill that requires companies to allow workers to be exempt from vaccinations.