A Voluntary Infection with Schistosoma Haematobium

Schistosomiasis - An Unusual Cause of Ureteral Obstruction: A Case History and Perspective

“…He reported the consequences of his voluntary infection with S. haematobium in 1949. 44 His intense suffering is well described. In the early stages of infection, cough, headache, loss of appetite, various aches and pains, and often difficulty in breathing followed the initial skin irritation.…”

“…Studies have long been undertaken to determine the potential of snails endemic to the United States to transmit schistosomes, and none have thus far proven capable of serving as a vector. 44,165,166 However, it is evident that snail host shifts have played a role in the Schistosoma evolution, so the possibility of an emerging competent schistosome/snail host combination in the United States, while negligible, is present. 167 There is a North American schistosome of which one should be aware, however, and that is the bird schistosome (Trichobilharzia ocellata = T. szidati) that causes cercarial dermatitis (swimmer's itch).…”

“…150 Other potential sequelae Secondary bacterial infection is common in schistosomiasis. 151 S. haematobium infections can not only affect the urinary tract, but also other organs of the pelvic floor, especially the reproductive organs, including the prostate and scrotum, 44 and the uterus and fallopian tubes, which can lead to infertility. 21,[152][153][154][155] The vulva, vagina, and cervix are affected more commonly than the internal pelvic organs.…”

“…44 Metrifonate (Trichlorfon: CASRN: 52-68-6) has been used for the treatment of S. haematobium, 15,16,95 but it has some severe human neurological side effects. 96 Currently, medical management of bilharziasis relies on praziquantel, sometimes in combination with oxamniquine.…”

“…11,44,63,64 For best results, urine collections should be made between 10:00 am and 2:00 pm to ensure maximum yield. 65 Another way to increase yield of eggs in the urine is to have the patient go for a short run or walk just before the urine is passed to facilitate the shedding of the eggs from the bladder mucosa.…”