Dickson, Daniel and Vincent solve the case of the Two Volunteers With Watery Diarrhea, discuss diagnosis of SARS-CoV-2 in the New York area, and reveal an approach to preventing honeybee colony collapse by imbuing their gut bacteria with the ability to produce antiviral and antiparasite double-stranded RNAs.

The parasite prophets solve the case of the Thai Man with Abdominal Distention, and discuss the finding that metastatic leishmaniasis dependent on a virus can be prevented by blocking IL-17A.