High levels of genetic diversity of Plasmodium falciparum populations in Papua New Guinea despite variable infection prevalence
High levels of genetic diversity in Plasmodium falciparum populations are an obstacle to malaria control. Here, we investigate the relationship between local variation in malaria epidemiology and parasite genetic diversity in Papua New Guinea (PNG). Cross-sectional malaria surveys were performed in...
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| Veröffentlicht in: | The American journal of tropical medicine and hygiene 2013-04, Vol.88 (4), p.718-725 |
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| creator | Barry, Alyssa E Schultz, Lee Senn, Nicholas Nale, Joe Kiniboro, Benson Siba, Peter M Mueller, Ivo Reeder, John C |
| description | High levels of genetic diversity in Plasmodium falciparum populations are an obstacle to malaria control. Here, we investigate the relationship between local variation in malaria epidemiology and parasite genetic diversity in Papua New Guinea (PNG). Cross-sectional malaria surveys were performed in 14 villages spanning four distinct malaria-endemic areas on the north coast, including one area that was sampled during the dry season. High-resolution msp2 genotyping of 2,147 blood samples identified 761 P. falciparum infections containing a total of 1,392 clones whose genotypes were used to measure genetic diversity. Considerable variability in infection prevalence and mean multiplicity of infection was observed at all of the study sites, with the area sampled during the dry season showing particularly striking local variability. Genetic diversity was strongly associated with multiplicity of infection but not with infection prevalence. In highly endemic areas, differences in infection prevalence may not translate into a decrease in parasite population diversity. |
| doi_str_mv | 10.4269/ajtmh.12-0056 |
| format | Article |
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Here, we investigate the relationship between local variation in malaria epidemiology and parasite genetic diversity in Papua New Guinea (PNG). Cross-sectional malaria surveys were performed in 14 villages spanning four distinct malaria-endemic areas on the north coast, including one area that was sampled during the dry season. High-resolution msp2 genotyping of 2,147 blood samples identified 761 P. falciparum infections containing a total of 1,392 clones whose genotypes were used to measure genetic diversity. Considerable variability in infection prevalence and mean multiplicity of infection was observed at all of the study sites, with the area sampled during the dry season showing particularly striking local variability. Genetic diversity was strongly associated with multiplicity of infection but not with infection prevalence. 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Here, we investigate the relationship between local variation in malaria epidemiology and parasite genetic diversity in Papua New Guinea (PNG). Cross-sectional malaria surveys were performed in 14 villages spanning four distinct malaria-endemic areas on the north coast, including one area that was sampled during the dry season. High-resolution msp2 genotyping of 2,147 blood samples identified 761 P. falciparum infections containing a total of 1,392 clones whose genotypes were used to measure genetic diversity. Considerable variability in infection prevalence and mean multiplicity of infection was observed at all of the study sites, with the area sampled during the dry season showing particularly striking local variability. Genetic diversity was strongly associated with multiplicity of infection but not with infection prevalence. In highly endemic areas, differences in infection prevalence may not translate into a decrease in parasite population diversity.</description><subject>Adult</subject><subject>Alleles</subject><subject>Antigens, Protozoan - blood</subject><subject>Antigens, Protozoan - genetics</subject><subject>Base Sequence</subject><subject>Child</subject><subject>Cross-Sectional Studies</subject><subject>Disease Transmission, Infectious - prevention & control</subject><subject>Endemic Diseases - prevention & control</subject><subject>Gene Frequency</subject><subject>Genetic Variation</subject><subject>Genotype</subject><subject>Haplotypes</subject><subject>Humans</subject><subject>Malaria, Falciparum - epidemiology</subject><subject>Malaria, Falciparum - parasitology</subject><subject>Papua New Guinea - epidemiology</subject><subject>Plasmodium falciparum</subject><subject>Plasmodium falciparum - classification</subject><subject>Plasmodium falciparum - genetics</subject><subject>Plasmodium falciparum - pathogenicity</subject><subject>Prevalence</subject><subject>Protozoan Proteins - blood</subject><subject>Protozoan Proteins - genetics</subject><subject>Seasons</subject><subject>Young Adult</subject><issn>0002-9637</issn><issn>1476-1645</issn><issn>1476-1645</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqF0cFv1iAYBnBiNO5zevRqOHrpfIEW2ouJWXQzWXQHPRMKb7-PhZYKbZed_Nflc3PRkycI_PKEl4eQ1wzOai67d-ZmGQ9njFcAjXxCdqxWsmKybp6SHQDwqpNCnZAXOd8AsJYz9pyccFEXrtiO_Lz0-wMNuGHINA50jxMu3lLnN0zZL3fHw-tg8hidX0c6mGD9bFLZznFeg1l8nDL1E70282roF7ylF6uf0FCHefYL0s0kb_qABQ1oj57OCTcTcLL4kjwrkRlfPayn5Punj9_OL6urrxefzz9cVbZu5VIZ7J0yTBjRiFoCHwRY56wdEDhCLxkqBZZB0b3rhq4XruMwdEpyWbvOilPy_j53XvsRncVpSSboOfnRpDsdjdf_3kz-oPdx00Iy1TZtCXj7EJDijxXzokefLYZgJoxr1uXLFYACpf5PRQNtB41ghVb31KaYc8Lh8UUM9LFf_btfzbg-9lv8m7_HeNR_ChW_ANZzpaA</recordid><startdate>20130401</startdate><enddate>20130401</enddate><creator>Barry, Alyssa E</creator><creator>Schultz, Lee</creator><creator>Senn, Nicholas</creator><creator>Nale, Joe</creator><creator>Kiniboro, Benson</creator><creator>Siba, Peter M</creator><creator>Mueller, Ivo</creator><creator>Reeder, John C</creator><general>The American Society of Tropical Medicine and Hygiene</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7QL</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H95</scope><scope>H97</scope><scope>L.G</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>5PM</scope></search><sort><creationdate>20130401</creationdate><title>High levels of genetic diversity of Plasmodium falciparum populations in Papua New Guinea despite variable infection prevalence</title><author>Barry, Alyssa E ; 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Here, we investigate the relationship between local variation in malaria epidemiology and parasite genetic diversity in Papua New Guinea (PNG). Cross-sectional malaria surveys were performed in 14 villages spanning four distinct malaria-endemic areas on the north coast, including one area that was sampled during the dry season. High-resolution msp2 genotyping of 2,147 blood samples identified 761 P. falciparum infections containing a total of 1,392 clones whose genotypes were used to measure genetic diversity. Considerable variability in infection prevalence and mean multiplicity of infection was observed at all of the study sites, with the area sampled during the dry season showing particularly striking local variability. Genetic diversity was strongly associated with multiplicity of infection but not with infection prevalence. 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| subjects | Adult Alleles Antigens, Protozoan - blood Antigens, Protozoan - genetics Base Sequence Child Cross-Sectional Studies Disease Transmission, Infectious - prevention & control Endemic Diseases - prevention & control Gene Frequency Genetic Variation Genotype Haplotypes Humans Malaria, Falciparum - epidemiology Malaria, Falciparum - parasitology Papua New Guinea - epidemiology Plasmodium falciparum Plasmodium falciparum - classification Plasmodium falciparum - genetics Plasmodium falciparum - pathogenicity Prevalence Protozoan Proteins - blood Protozoan Proteins - genetics Seasons Young Adult |
| title | High levels of genetic diversity of Plasmodium falciparum populations in Papua New Guinea despite variable infection prevalence |
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