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Estimation on local transmission of malaria by serological approach under low transmission setting in Myanmar

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Date
05/01/2018
Author
Nyunt, Myat Htut
Soe, Than Naing
Shein, Thinzar
Zaw, Ni Ni
Han, Soe Soe
Muh, Fauzi
Lee, Seong-Kyun
Han, Jin-Hee
Park, Ji-Hoon
Ha, Kwon-Soo
Park, Won Sun
Hong, Seok-Ho
Kyaw, Myat Phone
Han, Eun-Taek
Keywords
Malaria
Serological surveillance
Asymptomatic cases
Myanmar
QH301 Biology
RC Internal medicine
NDAS
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Abstract
Background: As the prevalence of the malaria has been decreasing in many endemic countries including Myanmar, malaria elimination in Greater Mekong Region was targeted not later than 2030. The relevance of molecular and serological tools to identify residual transmission remains to be established in this setting. Methods: One-year cohort study was conducted and sera samples were collected in every 3 months with active and passive case detection for clinical malaria episodes by RDT, microscopy and molecular method. The sera were used to detect the malaria antibody against PfMSP1-19, PvAMA1, PvDBPII and PvMSP1-19 by protein microarray. Results: Among the recruited 1182 participants, there was no RDT positive case for malaria infection although two vivax infections were detected by microscopy in initial collection. Molecular methods detected the asymptomatic cases of 28/1182 (2.37%) in first, 5/894 (0.42%) in second, 12/944 (1.02%) in third, 6/889 (0.51%) in fourth collection, respectively. Seropositivity rates against the PfMSP1-19, PvMSP1-19, PvAMA1 and PvDBPII were 73/270 (27.0%), 85/270 (31.5%), 65/270 (24.1%) and 160/270 (59.3%), respectively. PfMSP1-19 and PvMSP1-19 showed high and stable antigenicity in acute and subacute samples but declining in 1-year history samples. No cross reactivity of PfMSP1-19 and PvMSP1-19 between the two species and higher seropositivity among the asymptomatic carriers were observed. Mapping data indicated serological surveillance can detect the geographical pattern of malaria infection under low transmission setting. Conclusions: These findings support that PfMSP1-19 and PvMSP1-19 are suggested for serosurveillance of the malaria especially in low transmission setting for further necessary actions have to be carried out to eliminate the malaria.
Citation
Nyunt , M H , Soe , T N , Shein , T , Zaw , N N , Han , S S , Muh , F , Lee , S-K , Han , J-H , Park , J-H , Ha , K-S , Park , W S , Hong , S-H , Kyaw , M P & Han , E-T 2018 , ' Estimation on local transmission of malaria by serological approach under low transmission setting in Myanmar ' , Malaria Journal , vol. 17 , 6 . https://doi.org/10.1186/s12936-017-2170-8
Publication
Malaria Journal
Status
Peer reviewed
DOI
https://doi.org/10.1186/s12936-017-2170-8
ISSN
1475-2875
Type
Journal article
Rights
© The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/18126

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