A new coronavirus variant has been detected in four travellers from Brazil’s Amazonas state, Japan’s health ministry said on Sunday, the latest new mutation of the virus discovered. A ministry official said studies were underway into the efficacy of vaccines against the new variant, which differs from highly infectious variants first found in Britain and South Africa that have driven a surge in cases.
“At the moment, there is no proof showing the new variant found in those from Brazil is high in infectiousness,” Takaji Wakita, head of the National Institute of Infectious Diseases, told a health ministry briefing.
Brazil’s health ministry said it has been notified by Japanese authorities that the new variant has 12 mutations, and one of them had already been identified as also in the variants found in Britain and in South Africa. “It implies in a potential higher virus infectiousness,” it said.