The COVID-19 variant that has driven a rise in cases in mainland China is now detected in more than a dozen U.S. states, according to data released by a private tracking firm.
Earlier in the week, Chinese doctors predicted a peak of nationwide COVID-19 cases in July as the latest data released by Chinese health authorities show that variant NB 1.8.1 is still the main pathogen causing the rapid increase in COVID-19 infections in the country.





