Toxic caterpillars worry Sweden; they spread from Denmark

A toxic caterpillar, the oak processionary moth, has been found in Denmark, raising concerns about its potential spread to Sweden. The larvae's irritating hairs pose a health risk. The moth's larvae were discovered at a school in Odense, Denmark, causing worry about its possible migration. While adult male moths have been spotted in Sweden sporadically, the species hasn't established itself due to the colder climate. The oak processionary moth is known for causing problems in southern Europe. Experts are unsure if it could thrive in Sweden, but the larvae's toxic hairs can cause allergic reactions and skin irritation.