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Health Risks from Browntail Moths

The browntail moth is an invasive species of both forest and human health concern. Maine is the only state in the U.S. currently experiencing widespread problems with this moth. The microscopic hairs found on browntail moth caterpillars, shed skins, and cocoons can cause skin reactions and breathing problems. Providers should be aware of the risk of browntail moth hairs, and the public should know what they can do to help reduce exposure to browntail moth caterpillar hairs. Browntail moth caterpillars are hairy, dark brown caterpillars with two red-orange dots on the back.

Expanded Measles Vaccination Recommendations for Domestic Travel

As of April 3, 2025, the U.S. CDC had been notified of 607 confirmed cases of measles across 22 states and jurisdictions. Measles is an airborne, extremely infectious, potentially severe rash illness. Since January 1, 2025, 12% of reported measles cases in the United States have been hospitalized. At the time of sending this HAN, the U.S. CDC has confirmed two measles deaths in 2025.

U.S. CDC: Ongoing Risk of Dengue Virus Infections and Updated Testing Recommendations in the United States

Please take a moment to review this U.S. CDC health advisory about an increased risk of dengue virus infections in the U.S. in connection with an ongoing global surge in dengue activity. The risk of locally-transmitted dengue in Maine remains very low. People in Maine are more likely to acquire dengue infection while traveling to locations with ongoing dengue activity. So far in 2025, Maine reported one confirmed dengue case in a returning traveler.

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