This was reported by the NHK TV channel with reference to the statement of the Minister of Health, Norihisa Tamura.
According to him, all the patients arrived in Japan on December 21.
It is noted that three of them flew to Osaka, and two more to Tokyo.
Earlier, the Bulgarian pulmonologist Alexander Simidchiev said that a new strain of coronavirus infection COVID-19, which began to spread in London, as well as in the south-east of England, was identified in Bulgaria back in April.