| distribution of unengorged larvae of leptotrombidium pallidum and other species in and around the rodent nest holes. | the distribution of unengorged larvae of leptotrombidium pallidum, l. fuji and l. kitasatoi in and around 12 rodent-nest holes in oita prefecture, japan was studied using the tullgren funnel apparatus. soil was taken from each nest hole, and the ground-surface soil and litter from the surrounding area a (an inner quadrate of 20 cm x 20 cm except the nest hole), and also from the outer area b (an outer quadrate of 40 cm x 40 cm excluding a and the nest hole) were sampled, separately. the numbers ... | 2001 | 11944716 |
| epidemiological characteristics of tsutsugamushi disease in oita prefecture, japan: yearly and monthly occurrences of its infections and serotypes of its causative agent, orientia tsutsugamushi, during 1984--2005. | using indirect immunofluorescence assay, we examined the sera of 561 patients from november 1984 to february 2005 to determine the incidence of tsutsugamushi disease (scrub typhus) in oita prefecture, japan. the results obtained were positive in 384 individuals (68.4%). municipalities where patients were presumed to have been infected with orientia tsutsugamushi were taketa city (41.7%), oyama town (13.5%), and ogi town (8.3%). infections occurred most often in october, november, and december. a ... | 2008 | 18402595 |