Hymenolepsis nana

Hymenolepsis nana, the dwarf tapeworm, is found in gerbils. It has both a direct and indirect (via flour beetles or fleas) cycle.

H. nana is transmissable to man. Depending on the parasite burden, humans may have no apparent clinical signs or may have nausea, anorexia, vomiting, diarrhea, and central nervous signs (agitation).