Intensity of exposure and incidence of melioidosis in Thai children.
There is a high background seroprevalence of antibodies to Burkholderia pseudomallei in Thailand that limits its use as a diagnostic tool. It is believed that this results from childhood exposure to the bacterium in mud and surface water. The increasing prevalence of antibodies with age is a marker...
| Príomhchruthaitheoirí: | , , , , |
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| Formáid: | Journal article |
| Teanga: | English |
| Foilsithe / Cruthaithe: |
2008
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| _version_ | 1826280956869214208 |
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| author | Cheng, A Wuthiekanun, V Limmathurotsakul, D Chierakul, W Peacock, S |
| author_facet | Cheng, A Wuthiekanun, V Limmathurotsakul, D Chierakul, W Peacock, S |
| author_sort | Cheng, A |
| collection | OXFORD |
| description | There is a high background seroprevalence of antibodies to Burkholderia pseudomallei in Thailand that limits its use as a diagnostic tool. It is believed that this results from childhood exposure to the bacterium in mud and surface water. The increasing prevalence of antibodies with age is a marker of the intensity of exposure. A susceptible-infected-susceptible (SIS) model was calibrated with data on seroprevalence in children (<15 years) in Udon Thani and Ubon Ratchathani (n=2214). In this mathematical model, children were assumed to gain antibodies at a constant rate related to exposure events, and waning antibody response occurred at a constant rate. The intensity of exposure appeared to be higher in Udon Thani than in Ubon Ratchathani, with 24% vs. 11% of patients becoming seropositive each year. In Udon Thani children, antibodies appeared to be long-lasting, compared with those in Ubon Ratchathani, where the mean duration was 5.2 years. Based on an estimated paediatric disease incidence in Ubon Ratchathani of 4.15 per 100,000 population, it is estimated that approximately 1 in 4600 antibody-producing exposures results in clinical infection. Childhood seroprevalence can be used as a marker of intensity of exposure. Further work to separate the effect of exposure to B. thailandensis and cross-reactivity to B. pseudomallei is proposed. |
| first_indexed | 2024-03-07T00:21:32Z |
| format | Journal article |
| id | oxford-uuid:7cb5fa7d-7b23-4357-a80f-603d41439043 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:21:32Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:7cb5fa7d-7b23-4357-a80f-603d414390432022-03-26T20:58:48ZIntensity of exposure and incidence of melioidosis in Thai children.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7cb5fa7d-7b23-4357-a80f-603d41439043EnglishSymplectic Elements at Oxford2008Cheng, AWuthiekanun, VLimmathurotsakul, DChierakul, WPeacock, SThere is a high background seroprevalence of antibodies to Burkholderia pseudomallei in Thailand that limits its use as a diagnostic tool. It is believed that this results from childhood exposure to the bacterium in mud and surface water. The increasing prevalence of antibodies with age is a marker of the intensity of exposure. A susceptible-infected-susceptible (SIS) model was calibrated with data on seroprevalence in children (<15 years) in Udon Thani and Ubon Ratchathani (n=2214). In this mathematical model, children were assumed to gain antibodies at a constant rate related to exposure events, and waning antibody response occurred at a constant rate. The intensity of exposure appeared to be higher in Udon Thani than in Ubon Ratchathani, with 24% vs. 11% of patients becoming seropositive each year. In Udon Thani children, antibodies appeared to be long-lasting, compared with those in Ubon Ratchathani, where the mean duration was 5.2 years. Based on an estimated paediatric disease incidence in Ubon Ratchathani of 4.15 per 100,000 population, it is estimated that approximately 1 in 4600 antibody-producing exposures results in clinical infection. Childhood seroprevalence can be used as a marker of intensity of exposure. Further work to separate the effect of exposure to B. thailandensis and cross-reactivity to B. pseudomallei is proposed. |
| spellingShingle | Cheng, A Wuthiekanun, V Limmathurotsakul, D Chierakul, W Peacock, S Intensity of exposure and incidence of melioidosis in Thai children. |
| title | Intensity of exposure and incidence of melioidosis in Thai children. |
| title_full | Intensity of exposure and incidence of melioidosis in Thai children. |
| title_fullStr | Intensity of exposure and incidence of melioidosis in Thai children. |
| title_full_unstemmed | Intensity of exposure and incidence of melioidosis in Thai children. |
| title_short | Intensity of exposure and incidence of melioidosis in Thai children. |
| title_sort | intensity of exposure and incidence of melioidosis in thai children |
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