Enlarge / A passenger wearing protective clothing amid the COVID-19 pandemic waits to board a domestic flight at Shanghai Pudong International Airport on January 3. Getty | HECTOR RETAMAL / AFP
Although China has largely abandoned COVID-19 case reporting, evidence of its massive wave of infection readily shows up in airports outside its borders.
On a December 26 flight from the southeastern city of Wenzhou to Milan, Italy, 42 percent of the 149 passengers on board tested positive for COVID-19 upon arrival, according to a study published Thursday in the journal Eurosurveillance.
The Italian researchers behind the study also looked
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