microfilaria

/ˌmaɪkroʊfɪˈlɛriə/
noun
  1. The tiny, early larval stage of certain parasitic worms (filariae) that live in the blood or tissues of animals and humans.
    • Doctors tested for microfilariae to diagnose the tropical disease.
    • The blood sample showed the presence of microfilariae, indicating a parasitic infection.
    • Mosquitoes can transmit microfilariae from one host to another.