The World Health Organization said Wednesday China is “heavily underreporting” the number of COVID-19 deaths as a wave of infections sweeps the country. The Chinese Center for Disease Control and Prevention has not posted a daily briefing on COVID-19 to its website since Jan. 8 and has reported just 37 deaths since the “zero COVID” policy was lifted on Dec. 7 for a total of 5,272 deaths since the pandemic began.

According to data from Johns Hopkins Coronavirus Resource Center, China has seen nearly 18,000 deaths since the pandemic started. “WHO still believes that deaths are heavily underreported from China, and this is in relation to the definitions that are used but also to the need for doctors and those reporting in the public health system to be encouraged to report these cases and not discouraged,” Michael Ryan, executive director of WHO Health Emergencies Program said during a press conference in Geneva.

Ryan praised many of China’s measures to reduce the burden of disease including administering antivirals early in the course of infection and expanding designated beds in intensive care units but called for more reporting. “We are working ever closer with our colleagues in China to try and understand better the transmission dynamics, but we still do not have adequate information to make a full comprehensive risk assessment,” he said.

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