<i>Between 2001 and 2016, the U.S.D.A. intercepted semislug-infested plant shipments from Hawaii to the mainland at least forty-five times. If the organism made it across the Pacific, it would have little trouble surviving in warmer parts of the United States</i><p>The slug (which feeds on lettuce and papaya) is invasive; therefore this lungworm parasite that hosts itself on the slug becomes invasive by default... nature is sick sometimes.