But everything I have seen is that the early contact tracing in those European countries went back to Wuhan, not Italy.
The first documented cases in the US may have been connected with China, but the US was only looking at travelers from China at the time. And while the virus seems to have spread during Wuhan Fashion Week, it's not clear which way it went. Italy to China or China to Italy. The discovery of viruses in blood samples in Italy before Fashion Week suggest it was Italy, and the wide geographic area they came from suggests it was already epidemic.
Italy’s first two cases of COVID-19 disease were recorded on January 30, 2020, when two tourists from China tested positive for SARS-CoV-2 in Rome. The first laboratory-confirmed Italian COVID-19 case was identified in Lombardy on February 20, 2020, in a 38-year-old man who had no history of possible contacts with positive cases in Italy or abroad. . .
To test the hypothesis of early circulation of the virus in Italy, we investigated the frequency, timing, and geographic distribution of SARS-CoV-2 exposure in a series of 959 asymptomatic individuals, using proprietary SARS-CoV-2 binding and neutralizing antibodies on the plasma samples repository. . .
The first positive sample (IgM-positive) was recorded on September 3 in the Veneto region, followed by a case in Emilia Romagna (September 4), a case in Liguria (September 5), two cases in Lombardy (Milano Province; September 9), and one in Lazio (Roma; September 11). By the end of September, 13 of the 23 (56.5%) positive samples were recorded in Lombardy, three in Veneto, two in Piedmont, and one each in Emilia Romagna, Liguria, Lazio, Campania, and Friuli. A similar time distribution was observed when considering Lombardy alone.
https://journals.sag...300891620974755
Possibly just a coincidence, but Veneto and Liguria are two regions in Italy that Wikipedia gives with a tradition of eating bats: In 1959 it was reported that "in some places [of Italy], for example in Liguria and Veneto regions, the bats are or were used as food." Six years before the outbreak, Italian researchers found the bats of Northern Italy to be loaded with covid viruses.
CoV RNA was detected in seven of 69 faecal samples (10.1%) and in nine of 126 carcasses (7.2%), belonging to four bat species. Most of the CoV-positive samples were detected from Kuhl’s pipistrelle, which was the predominantly sampled bat species in this study. CoVs were also detected from Savi’s pipistrelle (one), common noctule (one), lesser horseshoe bat (four), and Pipistrelle bat (Pipistrellus spp.) (one).
Edited by Turnbuckle, 19 July 2022 - 01:33 PM.