The Use of Molluscacides in the Control of Oncomelania Nosophora, an Intermediate Host of Schistosoma Japonicum

Effect of Formaldehyde on the Direct Microscopic Count of Raw Milk

“…Within recent years, efforts have been made by several investigators to develop molluscacides for the destruction of the snail intermediate hosts of the human schistosomes. Reports of such investigations include those of Halawani (2, 3), Stirewalt and Kuntz (4,5), McMullen and Graham (6), McMullen et al 7, Pesigan and Masilunigan (8), Jachowski and Stirewalt (9), and McMullen et al (10). The most extensive field tests have been conducted by McMIullen et al (10) in Japan and have resulted in the finding that sodium pentachlorophenate and dinitro-o-cyclohexylphenol or its dicyclohexylamine salt were the most effective of all chemicals tested for the control of Oncomelania nosophora, the intermediate host of Schistosoma japonicum.…”