[Last Modified: ]
[Brugia malayi] [Brugia timori] [Dirofilaria spp.] [Loa loa] [Mansonella ozzardi] [Mansonella perstans] [Mansonella streptocerca] [Onchocerca volvulus] [Wuchereria bancrofti]

Microfilariae of Mansonella perstans are unsheathed and measure 190-200 µm in stained blood smears and 180-225 µm in 2% formalin.  The tail is blunt and nuclei extend to the tip of the tail.  Microfilariae circulate in the blood.

A	B

A, B: Microfilariae of M. perstans in a thick blood smear stained with Giemsa, from a patient from Cameroon.

C	D

C: Microfilaria of M. perstans in a thick blood smear stained with Giemsa, from a patient from Cameroon.
D: Microfilaria of M. perstans in a thin blood smear from the same specimen as Figures A-C.

E

E: Microfilaria of M. perstans in a thin blood smear from the same specimen as Figures A-D.