Summer campers face dangers of ticks and mosquitoes

In many parts of the United States, this weekend marks the start of summer camping season, which means swimming, arts and crafts, marshmallow roasts -- and, very often, ticks.

Of the more than 1,600 overnight camps that are members of the American Camp Association, more than a third are in New England and the mid-Atlantic states, where Lyme disease is particularly prevalent, according to the Centers for Disease Control and Prevention.

According to a May CDC report, cases of vector-borne diseases -- those caused by viruses and bacteria carried by ticks, mosquitoes and other bugs -- tripled in the United States from 2004 to 2016.

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