Strongyloides stercoralis ... 1. Strongyloides stercoralis ... ... 2. Synonym Strongyloides inste...
1. Strongyloides stercoralis
2. Synonym Strongyloides instestinalis Anguillula stercoralis Common Name Threadworm Disease Strongyloidiasis Cochin-China Disease Geographic Distribution Cosmopolitan (lower incidence compared to hookworm) and Sporadic in temperate and cold regions which parallels Hookworm Principal Host Man Incubation Period in Man 28 days Mode of Infection Contact with the intact skin of human beings with the filariform larva; walking barefoot
3. FEMALE Parasitic Female 2.2 mm Colorless, semitransparent Filariform nematode fine striated cuticle Slender tapering anterior end, and short conical posterior end Vulva 1/3 of body length from posterior end Uteri contain 8-12 thin shelled, transparent, segmented ova Free- Living Female 1mm, smaller than parasitic Resembles typical rhabditoid free-living nematode Muscular esophageal pharynx is double-bulbed and intestine is straight Vulva 2/5 length from posterior Uteri contain a single column of thin-shelled, transparent, segmented ova
4. MALE Parasitic Male Rhabditoid in type Identical with free living male except slightly larger buccal chamber Free- Living Male 0.7mm long Tail is curved ventrad 2 equal copulatory spicules and gubernaculums No caudal end ( a protective wing-like structure)
5. LARVAE Rhabditoid Larvae Feeding stage of the parasite Open mouth, short, and stout Club-shaped anterior portion with a post median constriction and a posterior bulbous esophagus Relatively conspicuous primordium on the ventral side halfway down the midgut Buccal cavity is short and of small diameter Molt 4 times before becoming an adult Filariform Larvae Non-feeding stage Close mouth, long, delicate, and slender Has long esophagus Tail with notched or blunt or fork appearance Infective to man Can swim in water, and survive in water or soil for several threads
6. Egg or Ova Ovoid Thin shelled Transparent Partially embryonated Hatch in mucosal epithelium Strongyloides stercoralis is an ovoviviparous
7. Mode of Infection Penetration on bare skin Disease Strongyloidiasis, Cochin China diarrhea
8. Clinical Manifestations Dermatitis, swelling, itching, larva currens and mild hemorrhage at the site where the skin has been penetrated Pnuemonia-like symptoms Lofflers syndrome Tissue damage, sempsis and ulcers Hyperinfection syndrome has a mortality rate of close to 90%
9. LIFE CYCLE What are the 2 types of life cycle?
10. Specimen Feces Sputum Duodenal aspirates Gastric aspirates
11. Diagnostic Stages: S. sterocoralis eggs = Papanicolau stained smears of duodenal or gastric aspirate Filariform Larvae = Ascitic Fluid, CSF, Feces and Sputum Rhabditiod Larvae = Stools, duodenal aspirates and sputum
12. Immunologic Test Indirect hemagglutination Enzyme-linked immunosorbent assay (ELIZA) Treatment Ivermectin with albendazole (uncomplicated strongyloidiasis) Ideal method would be prevention by improved sanitation (proper disposal of feces) Practice good hygiene (washing of hand is the right manner)
I can't say for sure if yours are strongyloides, but I think this vintage Science
poster from Ernst Haeckel has some similar "hairy" looking "morg" worms: