| results of testing for intestinal parasites by state diagnostic laboratories, united states, 1987. | we analyzed results of 216,275 stool specimens examined by the state diagnostic laboratories in 1987; parasites were found in 20.1%. percentages were highest for protozoans: giardia lamblia (7.2%), entamoeba coli and endolimax nana (4.2% each), blastocystis hominis (2.6%), entamoeba histolytica (0.9%), and cryptosporidium species (0.2%). identifications of giardia lamblia increased broadly from the 4.0% average found in 1979, with 40 states reporting increases and seven decreases. most states th ... | 1991 | 1779956 |
| parasitic infections in asymptomatic homosexual men: cost-effective screening. | the purpose of this study was to develop a cost-effective strategy for screening for enteric protozoan infections in homosexual men without gastrointestinal symptoms suggesting infection. one hundred and one homosexual men in portland, oregon, each submitted at least one unpurged stool sample; 91% submitted three samples each. of these, 27% had entamoeba histolytica, 61% had nonpathogenic protozoa with or without e. histolytica, 36% had a nonpathogen alone, and 3% had giardia lamblia. protozoan ... | 1986 | 3095515 |
| antigenic analysis of giardia lamblia from afghanistan, puerto rico, ecuador, and oregon. | the trophozoite antigens of giardia lamblia to which host humoral and cellular immune responses are directed have not been identified. therefore, we initiated studies to characterize these antigens in strains of g. lamblia from afghanistan, oregon, ecuador, and puerto rico. by polyacrylamide gel electrophoresis, the electrophoretic mobility patterns of proteins of the four strains were similar; molecular weights of protein bands ranged between 12,000 and 140,000. the antigens which reacted with ... | 1982 | 7085076 |