A recent study found that people who took an allergy medicine were much less likely to get sick from COVID-19 and the common cold, the latest research to show promising results for nasal sprays in attacking or blocking respiratory viruses in the nose.

"If we could stop the virus at the front door, that would be great," said Dr. William Schaffner, a professor of infectious diseases at the Vanderbilt University School of Medicine in Nashville. "The front door for these viruses is our nose and that tissue right in the back of our noses."

The German study of 450 adults published on Sept. 2 found that those who took azelastine — an antihistamine sold under the brand names Astepro and Astelin — were much less likely to contract viral infections than those who took a placebo. It came after ot

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