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    Jan 17, 2021
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    Plasmodium vivax resistance to chloroquine in Dawei, southern Myanmar.

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    Authors
    Guthmann, J P
    Pittet, A
    Lesage, A
    Imwong, M
    Lindegardh, N
    Min Lwin, M
    Zaw, T
    Annerberg, A
    de Radiguès, X
    Nosten, F
    Affiliation
    Epicentre, Paris, France.
    Issue Date
    2008-01
    
    Metadata
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    Journal
    Tropical Medicine & International Health
    Abstract
    OBJECTIVE: To assess the efficacy of chloroquine in the treatment of Plasmodium vivax malaria in in Dawei District, southern Myanmar. METHODS: Enrolled patients at Sonsinphya clinic >6 months of age were assessed clinically and parasitologically every week for 28 days. To differentiate new infections from recrudescence, we genotyped pre- and post-treatment parasitaemia. Blood chloroquine was measured to confirm resistant strains. RESULTS: Between December 2002 and April 2003, 2661 patients were screened, of whom 252 were included and 235 analysed. Thirty-four per cent (95% CI: 28.1-40.6) of patients had recurrent parasitaemia and were considered treatment failures. 59.4% of these recurrences were with a different parasite strain. Two (0.8%) patients with recurrences on day 14 had chloroquine concentrations above the threshold of 100 ng/ml and were considered infected with chloroquine resistant parasites. 21% of failures occurred during the first 3 weeks of follow-up: early recurrence and median levels of blood chloroquine comparable to those of controls suggested P. vivax resistance. CONCLUSIONS: Plasmodium vivax resistance to chloroquine seems to be emerging in Dawei, near the Thai-Burmese border. While chloroquine remains the first-line drug for P. vivax infections in this area of Myanmar, regular monitoring is needed to detect further development of parasite resistance.
    Publisher
    Wiley-Blackwell
    URI
    http://hdl.handle.net/10144/26152
    DOI
    10.1111/j.1365-3156.2007.01978.x
    PubMed ID
    18291007
    Language
    en
    ISSN
    1365-3156
    ae974a485f413a2113503eed53cd6c53
    10.1111/j.1365-3156.2007.01978.x
    Scopus Count
    Collections
    Malaria

    entitlement

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