Intestinal parasites of man in Oriental Mindoro, Philippines, with emphasis on schistosomiasis.

An intestinal parasite survey was conducted in the town of Victoria, Oriental Mindoro, Philippines in 1978 in order to estimate the current schistosomiasis situation in this area of the Philippines and Schistosoma japonicum eggs were detected in 20% of 1058 fecal specimens examined. The prevalence was more than twice as high as had been previously estimated. Infection rates were higher in males than in females, 26 versus 15% and age-wise were infrequent in young children (8%) and moderately common in other age groups (20-32%). Other intestinal helminths and protozoan parasites of man in Oriental Mindoro were: Ascaris lumbricoides, Trichuris trichiura, Necator americanus, Enterobius vermicularis, Strongyloides stercoralis, Capillaria sp, taenid tapeworm, echinostome, dicrocoelid and opisthorchiid trematode, Entamoeba histolytica, Entamoeba coli, Endolimax nana, Giardia lamblia, Iodamoeba bütschlii, Trichomonas hominis and Chilomastix mesnili.

Intestinal parasites of man in Bukidnon, Philippines, with emphasis on schistosomiasis.

A total of 831 fecal specimens from Malay-balay, Mindanao, Philippines were examined for schistosomiasis and common intestinal parasites. Schistosoma japonicum eggs were found in 16% of the samples. Infections were more common in males (20%) than in females (12%). Age-wise, infections were infrequently diagnosed in children less than 10 years and infections in older age groups varied from 12-27%. Hookworm, chiefly Necator americanus, was the most common parasite found (44%) followed by Ascaris lumbricoides (32%) Trichuris trichiura was found in only 12%. Enterobius vermicularis and eggs of Taenia sp., echinostome, heterophyid and dicrocoelid trematodes were identified in less than 1% of the samples. Entamoeba histolytica, Entamoeba coli, Entamoeba hartmanni, Endolimax nana, Giardia lamblia, Iodamoeba butschlii, Trichomonas hominis and Chilomastix mesnili were also found to parasitize man in this region of Mindanao.

Intestinal parasites of man in Northern Bohol, Philippines, with emphasis on schistosomiasis.

A survey for intestinal parasites with emphasis on Oriental schistosomiasis was conducted in the townships of Trinidad and Talibon, Bohol Province, Philippines and approximately 1,700 stool samples were examined. Schistosoma japonicum is still endemic to these areas of northern Bohol but infection rates were much lower than expected, 5% rather than 30%. Soil-transmitted helminths were the most common parasitic infections. Hookworms were found in 71% of the samples tested, most infections were due to Necator americanus 97% and Ancylostoma duodenale accounted for only 3%. Trichuris trichiura and Ascaris lumbricoides eggs were diagnosed in 58% and 45% respectively of the fecal samples examined. Other helminths and protozoan parasites detected were Enterobius vermicularis, Stronglyoides stercoralis, Entamoeba histolytica, Entamoeba hartmanni, Entamoeba coli, Endolimax nana, Iodamoeba bütschlii, Giardia lamblia and Chilomastix mesnili.