China study warns of 'colossal' Covid-19 outbreak - up to 630,000 cases a day - if it opens up like US and France

Police officers and medical staff members wearing personal protective equipment (PPE) are seen outside a residental area that is under restrictions following a recent coronavirus outbreak in Shanghai on November 26, 2021, that is under restrictions following a recent coronavirus outbreak in Shanghai on November 26, 2021. - AFP

BEIJING, Nov 28 (Reuters): China could face more than 630,000 Covid-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.