A study commissioned by Singapore Airlines in 2015 found that for large-scale operations, the airline’s pilot and cabin crew had unvaccinated rates of more than 10 percent. This survey, the first of its kind in the airline industry, found that many airlines have risks in dealing with medical conditions and too few rules to require all pilots to comply with vaccinations. Still, the Government of Singapore’s Air Pollution Monitoring Agency shows that Southeast Asia does not have safe air pollution levels.
A 2011 study conducted in Vietnam, Asia Pacific, said all air pollution is linked to lifestyle factors and increasingly high motor vehicle emissions. But the new stricter rules from health agencies may mean higher insurance costs for the airlines, their customers, and crew members. At the same time, additional medical complications, such as breathing and pulmonary infections and food poisoning, on the crew, may push cost up further.
A Singapore Airlines spokesman tells Time that the airline will not comply with this new regulation. Other airlines have been slower to adopt this regulation. The Department of Health of the Republic of Singapore may require the national carrier to report medical conditions for the rest of its pilots.