Small, fast, and crowded: Mammal traits amplify tick-borne illness

In the U.S., some 300,000 people are diagnosed with Lyme disease annually. Thousands also suffer from babesiosis and anaplasmosis, tick-borne ailments that can occur alone or as co-infections with Lyme disease. In our struggle to manage the ever-growing list of tick-borne diseases, we need to understand which animals magnify human disease risk. New results suggest when generalist pathogens emerge, small mammals with large populations and a fast pace of life warrant careful monitoring.

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