On the afternoon of the 27th local time, early this morning Beijing time, the World Health Organization held a regular press conference on the COVID-19 epidemic.
In response to questions from reporters from the head office, Michael Ryan, the head of the WHO Health Emergency Project, said that WHO is working with scientists around the world to trace the traceability of the novel coronavirus.
Michael Ryan, WHO Head of the Health Emergency Project: WHO is working with scientists around the world to trace the traceability of the virus and is open to information. WHO will also take the findings very seriously. The findings in France, Spain and Italy will continue to track relevant progress and examine each piece of evidence.
Maria van Kohoff, technical director of the WHO Health Emergency Project, said that some countries have carried out retrospective studies on wastewater samples. Some studies have shown that viral RNA was already present in European samples in December last year. Recently, Italian cancer screening agencies found that Italy had been positive since September last year. Serum samples, which WHO has contacted to conduct further research on these samples.