Airport Security Trays Carry More Cold Germs Than Toilets, Study Finds

Airport security is there to protect you, but it may also give you the sniffles — or worse.

To all the places and surfaces we’ve been warned are teeming with germs or bacteria — your pets, the subway seat, airplane cabins, the A.T.M. — add the airport security tray.

The plastic trays — used at airport checkpoints around the globe and touched by millions of passengers as they drop shoes, laptops, luggage and other items into them to clear X-ray scanners — have been found to harbor a variety of germs, including the ones responsible for the common cold, according to researchers in Europe.

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Scientists from the University of Nottingham in England and the Finnish National Institute for Health and Welfare swabbed frequently touched surfaces at Helsinki Airport in Finland during and after peak hours in the winter of 2016 and picked up traces of rhinovirus, the source of the common cold, and of the influenza A virus.

They found traces on half the luggage trays, more than on any of the other surfaces they tested. None of these viruses were found on toilet surfaces at the airport, they said.

The findings, published in the journal BMC Infectious Diseases, could help improve public health strategies in the fight against the spread of infectious diseases worldwide.

The study could also help educate people on how the infections we try to avoid each winter spread, Jonathan Van-Tam, a professor of health protection at the University of Nottingham, said in an emailed statement on Wednesday.

Scientists say that a common technique for applying hand sanitizer, one recommended by the Centers for Disease Control and Prevention, is inferior to an alternative method with twice as many steps.

Many of the surfaces we touch on a daily basis harbor and can spread germs. These include mobile phones, kitchen sponges and even cute bathtub rubber ducks. But air travel is known to accelerate the worldwide spread of diseases such as the flu, released naturally, and potentially of others released intentionally.

By Palko Karasz

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