The Filarial Worms, also known as Filariae or tissue Nematodes (of the Filarioidea superfamily) seems to be another of those pathogens that some laboratories, in Florida, are not capable or willing to find in blood or sputum samples. But I have found them in my blood and in my sputum. Therefore I know that it is possible to find in an unfixed and unstained blood or sputum  microscope slide. However, it's not easy. The blood sample must be fresh, with no chemicals added to it, unfixed and unstained. The sputum must also be unstained and with no chemicals added to it.

The vectors (carriers or intermediate hosts) of these microscopic nematodes are blood sucking arthropods, usually mosquitoes.

These are the scientific names (& common names in parenthesis) of the Microfilariaes that can infect humans: Wuchereria Bancrofti (Bancroft's filaria), Loa Loa (eye worm), Brugia malayi (malayan filaria), Mansonella persans, Mansonella streptocerca, and Onchocerca volvulus (blinding filaria).

In Central America & Africa, the black fly (Simulium) is known to carry Onchocerca volvulus.
The Anopheles & Mansonia mosquitoes are known to carry Brugia malayi.
The Culex, Aedes, and Anopheles mosquitoes are known to carry Wuchereria Bancrofti.

Doxycycline can kill most of the microfilariaes, but can not kill the adult Filariaes.
In fact, no known medicine can kill the adult Filariaes that can hide in the lymphatic system or in the capilaries of the lungs and/or the capilaries of the heart.
Adult females can produce thousands of microfilariaes every day.
Ivermectin kills the microfilariaes and prevents new microfilariaes from leaving the uteri of the adult females.

I am showing, in this page, links to some micrographs and microvideos that shows some of the Microfilariaes (or some other similar microscopic nematode) that I have found in microscope slides made with my blood or my sputum in them. However, I have not been able to identify the species of the ones in my lungs and blood.

The following small images are links to the larger micrographs, if you select them (by pressing the select button on your mouse or track ball, or if using a touch screen, touch them) it will show you the larger micrographs.

FROM SPUTUM:






And here is a 1 minute microvideo at 400x of the microfilariae in sputum.




FROM BLOOD:

  


  

   




I have seem this microscopic nematodes, in the blood, as far back as 2020.
However, I first saw them, in sputum in 2026, while looking for mold and bacteria due to an acute pulmonary infection.

REFERENCES:

Paniker's Textbook of MEDICAL PARASITOLOGY   (8th Edition)
MEDICAL PARASITOLOGY A Self-Instructional Text (7th Edition)
CLINICAL MICROBIOLOGY Made Ridiculously Simple.  (6th Edition)

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