1/4. Misidentification of onchocerca volvulus as guinea worm.Over the past 10 years, the status of human infection with guinea worm (Dracunculus medinensis) in the central african republic (CAR) has been difficult to ascertain. It is unclear if indigenous cases are occurring and whether cases are migrating into the CAR from surrounding countries. A team of investigators visited the CAR in July-August 2000, to attempt to ascertain the presence of indigenous transmission. No cases of true guinea-worm infection (i.e. dracunculiasis) were detected, but three cases of human infection with onchocerca volvulus, each of which had been misidentified as dracunculiasis, were detected. The unusual presentation of skin blisters and extraction of an intact female O. volvulus are described. As a result of this investigation, and the confusion of onchocerciasis being misidentified as dracunculiasis, the presence of endemic transmission of guinea worm in the CAR remains in question.- - - - - - - - - - ranking = 1keywords = transmission (Clic here for more details about this article) |
2/4. An Onchocerca species of wild boar found in the subcutaneous nodule of a resident of Oita, japan.Histological examination and dissection of a subcutaneous nodule removed from the right infraclavicular region of a 69-year-old woman from Oita, Kyushu, japan, revealed a young female of Onchocerca dewittei japonica, a common parasite of wild boar in the Oita region. Distinctive morphologic characteristics of this Onchocerca species include the thick cuticle with very prominent and straight transverse ridges overlapping at the lateral sides, the lack of inner striae (scalloping) of the inner cuticle layer, the dorso-ventral symmetry, and the thick somatic muscles. Jointed with previous reports in the past decade, this case confirms the occasional transmission of the parasite from wild boar to humans in Oita.- - - - - - - - - - ranking = 0.5keywords = transmission (Clic here for more details about this article) |
3/4. Possible transplacental transmission of onchocerca volvulus.In a recent epidemiological study on onchocerciasis on the lower Jos Plateau in nigeria, a 7-month-old baby delivered by a mother suffering from onchocerciasis showed early clinical signs of the disease: pruritus was present all over the body. The infant's skin snip on incubation revealed microfilariae of onchocerca volvulus. These findings were confirmed 3 months later when the child was re-examined. No onchocercal nodule was found, but pruritus persisted.- - - - - - - - - - ranking = 2keywords = transmission (Clic here for more details about this article) |
4/4. A probable case of vertical transmission of onchocerca volvulus microfilariae.A probable case of vertical transmission of onchocerca volvulus microfilariae in Dass Bauchi State, nigeria is presented. A 28-week-old male child delivered by a 39-year-old Fulani woman suffering from onchocerciasis was positive for O. volvulus microfilariae based on skin snip examinations. The child had general body pruritic rash and intermittent fever. Although the child's skin snip on re-examination five weeks later was also positive, the fever had gradually subsided.- - - - - - - - - - ranking = 2.5keywords = transmission (Clic here for more details about this article) |