Cercarial dermatitis, also known as "swimmer's itch," develops after the skin comes into contact with the larvae of parasites that inhabit freshwater bodies. In humans, the disease can manifest as intense itching, skin redness, allergic reactions, and the appearance of small blisters. According to Dmitry Fedorov, a candidate of biological sciences, the risk of infection can be reduced by avoiding swimming in stagnant freshwater bodies where waterfowl are present. "Particular caution should be exercised in shallow waters with stagnant water and dense aquatic vegetation," noted Dmitry Fedorov. On hot sunny days, the specialist recommends choosing deeper areas with currents or equipped beaches located away from places where ducks and other waterfowl congregate. These birds are the primary carriers of the parasites. After leaving the water, the biologist advises not to delay hygiene procedures. "Immediately after swimming, it is necessary to thoroughly rub the body with a rough towel until completely dry. If there is no towel, dry sand can be used. Then it is advisable to take a shower and dry the skin again thoroughly," explained the expert. According to him, vigorous rubbing helps to remove droplets of water from the skin's surface, which may contain parasite larvae, as well as to destroy cercariae if they have just begun to penetrate the skin. Experts remind that it is impossible to completely eliminate the risk of infection; however, following simple rules significantly reduces the likelihood of developing cercarial dermatitis. Choose safe bodies of water for swimming, avoid areas where waterfowl gather, and be sure to dry your skin thoroughly after leaving the water.