ABSTRACT
A 26-year-old man residing in a village of Thai Nguyen Province, North Vietnam, visited the Thai Nguyen Provincial Hospital in July 2008. He felt a bulge-sticking pain in his left eye and extracted 5 small nematode worms by himself half a day before visiting the hospital. Two more worms were extracted from his left eye by a medical doctor, and they were morphologically observed and genetically analyzed on the mitochondrial cytochrome c oxidase 1 gene. The worms were 1 male and 1 female, and genetically identical with those of Thelazia callipaeda. By the present study, the presence of human T. callipaeda infection is first reported in Vietnam.
Subject(s)
Adult , Animals , Humans , Male , Cluster Analysis , Electron Transport Complex IV/genetics , Eye Diseases/parasitology , Microscopy , Phylogeny , Spirurida Infections/diagnosis , Thelazioidea/anatomy & histology , VietnamABSTRACT
Thelazia anolabiata (Molin, 1860) Raillet & Henry, 1910, parasite of eyes of birds, is reported in s new host, Ortalis canicolis pantanalensis Cher & Reich from Salobra, Mato Grosso do Sul State; T. digitata Travassos, 1918 and T. lutzi Travassos, 1918 are considered its synonyms
Subject(s)
Animals , Birds/parasitology , Thelazioidea/classification , Brazil , Thelazioidea/anatomy & histologyABSTRACT
A total of 23 gnathostome specimens different stages from the Hospital for Tropical Diseases, other general hospitals and medical clinics in Bangkok metropolitan area and central Thailand were identified as G. spinigerum. The various stages were as follows: Five advanced third-stage larvae (22.0%) of various sizes; 2.20-3.50 mm X 0.40-0.63 mm were removed from the skin, mucous membrane and the eyeball, of which the smallest measured 2.20 X 0.40 mm. Fourteen immature worms of both sexes were from the skin and mucous membrane, one spontaneously voided in the urine. The sizes varied from 4.63-9.35 mm X 0.60- 1.05 mm (8 male worms), and 3.83-16.25 mm. X 0.83-1.0 mm (6 female worms). All these immature worms had 8 rows of complete cephalic-hooklets with the exception of two with 6 and 7 rows of complete cephalic-hooklets. Four mature males size ranged from 9.9-12.5 mm X 1.0-1.25 mm. The smallest was removed from the abdominal skin of a newly born 7-day old baby evidently the case was prenatally transmitted.