The Chinese Centre for Disease Control and Prevention (CDC) has unveiled its own suggestion regarding how the World Health Organisation (WHO) should handle the second phase of the investigation into the origins of the COVID-19 virus. According to the Chinese CDC, WHO investigators should focus their efforts on studying cold-chain products and their logistics ahead of the detection of the first COVID-19 cases in Wuhan – specifically between September and December 2019.

The Chinese CDC epidemiologists said that samples of COVID-19 could be found on some of the cold-chain products shipped to other Chinese cities, namely to Beijing and Dalian, right before the two cities suffered limited outbreaks of the disease in summer 2020. These incidents happened after China managed to quickly end the original outbreak in Wuhan in April 2020.

© REUTERS / THOMAS PETER
Staff members in protective suits stand at Hubei Provincial Hospital of Integrated Chinese and Western Medicine where members of the World Health Organization (WHO) team tasked with investigating the origins of the coronavirus disease (COVID-19) are visiting, in Wuhan, Hubei province, China January 29, 2021.

Chinese epidemiologists have thus suggested that COVID-19 might have been imported into Wuhan, either from another Chinese region or from a foreign supplier of cold-chain products. Members of the country’s CDC have proposed that the WHO explore this hypothesis and track the supply chain for this type of product. The scientists stressed in their publications that there have been numerous evidence of COVID-19 being present in other parts of the world, specifically the US, Italy, Spain and France, ahead of the detection of the first cases in China and as early as March 2019.

“We conducted epidemiological investigations, nucleic acid testing, antibody detections, cold-chain food retrospection and comparative analysis of viral gene sequencing of COVID-19 patients and food packages and confirmed that the virus was imported from other countries or regions through the cold-chain transportation”, Ma Huilai, an official from the China CDC said.

The researchers from the Chinese CDC further noted that over half of the stores in the Huanan seafood market, a suspected source of the original infection, imported 29 types of cold-chain products from 20 countries and regions of China.