Japanese study found that two Omicron mutants were difficult to multiply at high temperature.

FAP, April 30, a new study by the University of Tokyo in Japan shows that the proliferation ability of novel coronavirus Omicron mutants BA.5 and BQ.1.1 has greatly weakened at 40 degrees Celsius, which may be one of the reasons for the lower pathogenicity of Omicron mutants compared with Delta and other mutants. The paper has been published in the online edition of the Lancet pathogen.