How Effective Are Face Masks in Preventing Illness? With the spread of the coronavirus, face br masks have been selling out in the U.S. But how reliable are masks in br preventing the spread of viruses? Though there is no conclusive research, br studies have found that respirators are br more protective than surgical masks. Studies have shown that surgical masks are helpful in preventing other common illnesses such as the flu. The CDC has recommended that anyone confirmed br or suspected to have the coronavirus wear a face br mask when in the presence of others. New York Medical College Dean Robert Amler Experts maintain the best ways to avoid getting br sick are frequently washing your hands and br avoiding contact with infected people.