“Yes, I am concerned,” Biden replied to the related question.
His words are quoted by TASS.
The American leader also recalled the need to take a test for COVID-19 when flying to the US from China.
Earlier it became known that the World Health Organization (WHO) believes that China provides incomplete and inaccurate data on hospitalizations and deaths from coronavirus.
On December 31, WHO representatives asked the Chinese side to exchange data on the current epidemiological situation.