MIAMI: People who fly on airplanes while contagious can indeed get other people sick, but the risk is mainly to those seated next to them or in the adjacent row, US researchers said.
The study in the Proceedings of the National Academy of Sciences (PNAS) is the first to quantify the odds of getting sick based on a passenger's proximity to an infectious person. Researchers studied 10 transcontinental flights and meticulously tracked passenger movements to estimate the likelihood of common respiratory infections like severe acute respiratory syndrome (SARS) and influenza, which are spread by tiny droplets in the air and on surfaces.
"Passengers seated within one row and within two seats laterally of the infected passenger had an 80 percent or greater probability of becoming infected," said the study. "For all other passengers, the probability of infection was less than three percent."
Researchers also warned that infectious crew members could infect an average of 4.6 passengers per flight. "Thus, it is imperative that flight attendants not fly when they are ill," said the study led by researchers at Emory University and the Georgia Institute of Technology.
The good news is that public health guidelines typically go even further, urging those seated within two rows of an infected passenger to undergo surveillance for certain contagious diseases. "The authors´ model argues that it requires you to be closer than previously reported, within one row and two seats of an infected passenger -- as opposed to two rows regarding greatest risk of becoming ill on an airplane," said Lenox Hill Hospital emergency physician Robert Glatter, who was not involved in the study.
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