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(mī″krō-fĭ-lar′ē-ă) (-lar′ē-ē″) plural.microfilariae [ micro- + filaria]
The embryo of a filarial worm. Microfilariae are present in the blood and tissues of those infected with filariasis and are of importance in the diagnosis of filarial infections.
microfilarial (-lar′ē-ăl), adjective


emanating from or pertaining to microfilariae.

microfilarial pityriasis
a name given to a seasonal skin lesion on the backs of horses, characterized by hair loss and severe pruritus. Some of the lesions contain microfilariae, hence the name; but many of the cases appear to be allergic dermatitis. See also equine allergic dermatitis.
References in periodicals archive ?
At the time of his discharge, microfilarial quantification was 2,250 microfilariae/mL of blood.
Immunoepidemiology of Wuchereria bancrofti infection in two east African communities: Antibodies to the microfilarial sheath and their role in regulating microfilaraemia.
In vitro effects of plant extracts on Brugia malayi microfilarial motility Percentage reduction in Mf motility by plants extracts Concentration Vitex negundo L.
4-7) Scanning the literature we found only 1 report on microfilarial pleural involvement.
Subsequent trials in humans with onchocerciasis have shown that ivermectin also can reduce microfilarial counts to under 10 percent of pretreatment levels within days, an effect that lasts for up to a year.
In this systematic investigation, microfilarial invasion of the placenta occurred in 13% of microfilaremic patients.
These targeted areas can be better identified by more frequent epidemiological surveys of the extent and location of epizoonoses in domestic and wild canids, and by more frequent mosquito microfilarial surveys.
The repeat FNAC revealed a solitary microfilarial worm of W.
While a single dose of ivermectin markedly reduces skin microfilarial loads up to 12 months, with a transient fall in microfilarial level (21), repeated doses of ivermectin are reported to lower the incidence of microfilaremia.
The important observation of the present study was that when microfilarial count and antigen levels were compared in PT samples, significant differences were observed in mf count on day 0 as compared to day 60,90,180 and 365 PT while in antigenaemia levels no significant difference was observed in day 0 samples as compared to PT samples.
In dogs naturally infected with Dirofilaria immitis, 12 subcutaneous injections of extract (100 mg/kg, solvent 50% ethanol) reduced microfilarial concentration in blood by a maximum of 98%.
The diagnosis is suggested by residence in a filarial endemic area, eosinophilia (> 2,000/[micro]L), compatible clinical symptoms, increased serum IgE (> 1,000 IU/mL), and high titers of anti microfilarial antibodies in the absence of microfilaremia.