Shistosomiasis (Snail Fever, Bikharziasis) -
Slowly progressive disease caused by a blood fluke Endemic in 10 regions and 24 provinces. High prevalence: Regions 5, 8, 11
Causative Agent: Schistosoma mansoni, S. haematobium, S. japonicum (endemic in the Philippines) Vector: Oncomelania Quadrasi –Thrives in fresh water, clings to grasses and leaves, greenish brown in color, and the size is as smallest grain of “palay”. Incubation Period: At least 2 months Mode of Transmission Contact with the infected freshwater with cercaria and penetrates the skin. Clinical Manifestations - Diarrhea - Bloody stools - Enlargement of abdomen - Splenomegaly - Hepatomegalu - Anemia - weakness Diagnostic Procedure 1. Fecalysis 2. Kato-Katz Technique 3. Cercum ova precipitin (COPT) – Confirmatory test Treatment Modalities Drug-of-Choice: PRAZIQUANTEL (Biltracide) Oxamniquine for S. mansoni Metrifonate for S. haematobium Nursing Management 1. Dispose the feces properly not reaching body of water. 2. Use molluscides
3. Prevent exposure to contaminated water (e.g. use rubber boots) 4. Apply 70% alcohol immediately to skin to kill surface cercariae