China could face more than 630,000 Covud-19 infections a day if it dropped its zero-tolerance policies by lifting travel curbs, according to a study by Peking University mathematicians.

In the report published in China CDC Weekly by the Chinese Centre for Disease Control and Prevention, the mathematicians said China could not afford to lift travel restrictions without more efficient vaccinations or specific treatments.

Using data for August from the United States, Britain, Spain, France and Israel, the mathematicians assessed the potential results if China adopted the same pandemic control tactics as those countries.

China's daily new cases would reach at least 637,155 if it adopted the United States' pandemic strategy, the report said.

Read from Reuters here.