| survey of internal parasites in western australian pig herds. 1. prevalence. | between september 1982 and march 1984, 101 western australian piggeries with 15 or more sows were surveyed to determine the prevalence of internal parasites and examine the relationship between parasitism and management practices. faecal samples were collected from 20 pigs in 4 age groups in randomly selected piggeries, and examined for the presence of eggs of helminth parasites and protozoan cysts. evidence of nematode parasites was found in 79% of piggeries. sows were more commonly affected th ... | 1989 | 2930392 |
| intestinal parasite infections in western australian aborigines. | giardia intestinalis (15.2%) and hymenolepis nana (20.4%) were the two most frequently reported species in a study of intestinal parasites from 1683 aboriginal people in western australia. concurrent infection with the two species was statistically significant in the 0 to three years age group only (p < 0.01), and it is suggested that in older age groups the presence of one of these parasites may in some way inhibit the development of the other. hymenolepis nana infection was more common in male ... | 1980 | 7453610 |
| regulation of asthma by intestinal parasites. investigation of possible mechanisms. | the serum ige levels of asthmatic subjects from papua, new guniea (png) were similar to those of corresponding control subjects but significantly higher than caucasian asthmatics from western australia (aus). notwithstanding these differences in total ige, the levels of ige antibodies to d. pteronyssinus (rast units) were similar in both asthmatic groups. the mite specific ige antibody levels were independent of those to ascaris and hookworm, suggesting that antigenic competition is not a factor ... | 1978 | 571404 |