Researchers at the Hebrew University of Jerusalem have tracked how sandflies spread the parasitic disease Leishmaniasis (see here previously).  Their HRM-PCR DNA test identifies the animals and humans that the insect has infected and can help control or prevent epidemics.

https://www.afhu.org/2025/11/12/cracking-leishmaniasis-new-dna-test-to-track-infection/

https://journals.plos.org/plosntds/article?id=10.1371/journal.pntd.0013412