Should vaccinated travellers be tested for COVID-19 to prevent asymptomatic spread?
Airlines need to be able to prevent the spread of COVID-19 to restart mass foreign travel. Some organisations are considering using vaccine passports.
Although the new COVID-19 vaccines are successful at preventing the COVID-19 syndrome, it is still unknown whether the vaccines prevent people from getting infected and passing on the SARS-CoV-2 virus.
Additionally, many countries, including the U.S., require fully vaccinated air travellers from abroad to have a negative SARS-CoV-2 viral test result or documentation of recovery from COVID-19 before they board a flight to the United States (1).
Testing passports based on sensitive testing are a critical component of restarting air travel.
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