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ARTHROPOD SPECIES DETECTION OF RICKETTSIAL INFECTION IN THE SOUTHERN OF VIETNAM, 2016
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We collected chigger mites at 7 survey sites in habitats of the national park, mangroves, nature reserves of the Southern on months the rainy season and dry season from 2015 - 2016.Objectives: To determine chigger mites infection rate in rats and species composition, the distribution of chigger mites in rats, and to detect chigger mites of rickettsial infection which is parasitic on rats.Results and conclusions: The common chigger mites infection rate in rats was 23.38% (143/600). In which Suncus murinus and Mus musculus were not infected chigger mites, the highest chigger mites infection rate in Rattus rattus was 36.36% (4/11) and Rattus norvegicus 32.87% (47/143). Collected 2,770 chigger mites individuals from 6 species, 3 genera, 1 family. Among them, Ascoschoengastia was a species of Ascoschoengastia (L.) indica; Leptotrombicula was 2 species of Leptotrombidium (L.)deliense and Leptotrombidium (L.) striatum; Gahrliepia was 3 specie of Gahrliepia (W.) chinensis, Gahrliepia (W.) lupella and Gahrliepia (W.) parapacifica. Total of 123 chigger mites samples (1,781 individual) were tested by PCR. Showed that the overall prevalence of Orientia tsutsugamushi was1.62% (2/123). Where in O. tsutsugamushi in the specie of Ascoschoengastia (L.) indica was 4.67% (1/21) and the species of L. (L.) deliense was 1.85% (1/54). None of chigger mite samples positive with Rickettsia spp.
Vietnamese Society for Infectious Diseases
Title: ARTHROPOD SPECIES DETECTION OF RICKETTSIAL INFECTION IN THE SOUTHERN OF VIETNAM, 2016
Description:
We collected chigger mites at 7 survey sites in habitats of the national park, mangroves, nature reserves of the Southern on months the rainy season and dry season from 2015 - 2016.
Objectives: To determine chigger mites infection rate in rats and species composition, the distribution of chigger mites in rats, and to detect chigger mites of rickettsial infection which is parasitic on rats.
Results and conclusions: The common chigger mites infection rate in rats was 23.
38% (143/600).
In which Suncus murinus and Mus musculus were not infected chigger mites, the highest chigger mites infection rate in Rattus rattus was 36.
36% (4/11) and Rattus norvegicus 32.
87% (47/143).
Collected 2,770 chigger mites individuals from 6 species, 3 genera, 1 family.
Among them, Ascoschoengastia was a species of Ascoschoengastia (L.
) indica; Leptotrombicula was 2 species of Leptotrombidium (L.
)deliense and Leptotrombidium (L.
) striatum; Gahrliepia was 3 specie of Gahrliepia (W.
) chinensis, Gahrliepia (W.
) lupella and Gahrliepia (W.
) parapacifica.
Total of 123 chigger mites samples (1,781 individual) were tested by PCR.
Showed that the overall prevalence of Orientia tsutsugamushi was1.
62% (2/123).
Where in O.
tsutsugamushi in the specie of Ascoschoengastia (L.
) indica was 4.
67% (1/21) and the species of L.
(L.
) deliense was 1.
85% (1/54).
None of chigger mite samples positive with Rickettsia spp.
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