The Impact of Six Annual Rounds of Mass Drug Administration on Wuchereria bancrofti Infections in Humans and in Mosquitoes in Mali
Wuchereria bancrofti prevalence and transmission were assessed in six endemic villages in Sikasso, Mali prior to and yearly during mass drug administration (MDA) with albendazole and ivermectin from 2002 to 2007. Microfilaremia was determined by calibrated thick smear of night blood in adult volunte...
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Veröffentlicht in: | The American journal of tropical medicine and hygiene 2015-08, Vol.93 (2), p.356-360 |
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creator | Coulibaly, Yaya I Dembele, Benoit Diallo, Abdallah Amadou Konaté, Siaka Dolo, Houseini Coulibaly, Siaka Yamoussa Doumbia, Salif Seriba Soumaoro, Lamine Coulibaly, Michel Emmanuel Bockarie, Moses J Molyneux, David Nutman, Thomas B Klion, Amy D Toure, Yeya T Traore, Sekou F |
description | Wuchereria bancrofti prevalence and transmission were assessed in six endemic villages in Sikasso, Mali prior to and yearly during mass drug administration (MDA) with albendazole and ivermectin from 2002 to 2007. Microfilaremia was determined by calibrated thick smear of night blood in adult volunteers and circulating filarial antigen was measured using immunochromatographic card test in children < 5 years of age. Mosquitoes were collected by human landing catch from July to December. None of the 686 subjects tested were microfilaremic 12 months after the sixth MDA round. More importantly, circulating antigen was not detected in any of the 120 children tested, as compared with 53% (103/194) before the institution of MDA. The number of infective bites/human/year decreased from 4.8 in 2002 to 0.04 in 2007, and only one mosquito containing a single infective larva was observed 12 months after the final MDA round. Whether this dramatic reduction in transmission will be sustained following cessation of MDA remains to be seen. |
doi_str_mv | 10.4269/ajtmh.14-0516 |
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Microfilaremia was determined by calibrated thick smear of night blood in adult volunteers and circulating filarial antigen was measured using immunochromatographic card test in children < 5 years of age. Mosquitoes were collected by human landing catch from July to December. None of the 686 subjects tested were microfilaremic 12 months after the sixth MDA round. More importantly, circulating antigen was not detected in any of the 120 children tested, as compared with 53% (103/194) before the institution of MDA. The number of infective bites/human/year decreased from 4.8 in 2002 to 0.04 in 2007, and only one mosquito containing a single infective larva was observed 12 months after the final MDA round. Whether this dramatic reduction in transmission will be sustained following cessation of MDA remains to be seen.</description><identifier>ISSN: 0002-9637</identifier><identifier>EISSN: 1476-1645</identifier><identifier>DOI: 10.4269/ajtmh.14-0516</identifier><identifier>PMID: 26033027</identifier><language>eng</language><publisher>United States: The American Society of Tropical Medicine and Hygiene</publisher><subject>Adolescent ; Adult ; Albendazole - therapeutic use ; Animals ; Child ; Child, Preschool ; Cross-Sectional Studies ; Culicidae ; Culicidae - parasitology ; Drug Therapy, Combination - methods ; Elephantiasis, Filarial - drug therapy ; Elephantiasis, Filarial - epidemiology ; Female ; Humans ; Ivermectin - therapeutic use ; Larva - drug effects ; Larva - metabolism ; Male ; Mali - epidemiology ; Middle Aged ; Prevalence ; Wuchereria bancrofti ; Wuchereria bancrofti - drug effects ; Young Adult</subject><ispartof>The American journal of tropical medicine and hygiene, 2015-08, Vol.93 (2), p.356-360</ispartof><rights>The American Society of Tropical Medicine and Hygiene.</rights><rights>The American Society of Tropical Medicine and Hygiene 2015</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c420t-46016ca8a55362b290826af88a86b7fb0e6b724cf80d1df05aec44289feb51033</citedby><cites>FETCH-LOGICAL-c420t-46016ca8a55362b290826af88a86b7fb0e6b724cf80d1df05aec44289feb51033</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4530761/pdf/$$EPDF$$P50$$Gpubmedcentral$$H</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4530761/$$EHTML$$P50$$Gpubmedcentral$$H</linktohtml><link.rule.ids>230,314,723,776,780,881,27901,27902,53766,53768</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26033027$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Coulibaly, Yaya I</creatorcontrib><creatorcontrib>Dembele, Benoit</creatorcontrib><creatorcontrib>Diallo, Abdallah Amadou</creatorcontrib><creatorcontrib>Konaté, Siaka</creatorcontrib><creatorcontrib>Dolo, Houseini</creatorcontrib><creatorcontrib>Coulibaly, Siaka Yamoussa</creatorcontrib><creatorcontrib>Doumbia, Salif Seriba</creatorcontrib><creatorcontrib>Soumaoro, Lamine</creatorcontrib><creatorcontrib>Coulibaly, Michel Emmanuel</creatorcontrib><creatorcontrib>Bockarie, Moses J</creatorcontrib><creatorcontrib>Molyneux, David</creatorcontrib><creatorcontrib>Nutman, Thomas B</creatorcontrib><creatorcontrib>Klion, Amy D</creatorcontrib><creatorcontrib>Toure, Yeya T</creatorcontrib><creatorcontrib>Traore, Sekou F</creatorcontrib><title>The Impact of Six Annual Rounds of Mass Drug Administration on Wuchereria bancrofti Infections in Humans and in Mosquitoes in Mali</title><title>The American journal of tropical medicine and hygiene</title><addtitle>Am J Trop Med Hyg</addtitle><description>Wuchereria bancrofti prevalence and transmission were assessed in six endemic villages in Sikasso, Mali prior to and yearly during mass drug administration (MDA) with albendazole and ivermectin from 2002 to 2007. 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Microfilaremia was determined by calibrated thick smear of night blood in adult volunteers and circulating filarial antigen was measured using immunochromatographic card test in children < 5 years of age. Mosquitoes were collected by human landing catch from July to December. None of the 686 subjects tested were microfilaremic 12 months after the sixth MDA round. More importantly, circulating antigen was not detected in any of the 120 children tested, as compared with 53% (103/194) before the institution of MDA. The number of infective bites/human/year decreased from 4.8 in 2002 to 0.04 in 2007, and only one mosquito containing a single infective larva was observed 12 months after the final MDA round. 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subjects | Adolescent Adult Albendazole - therapeutic use Animals Child Child, Preschool Cross-Sectional Studies Culicidae Culicidae - parasitology Drug Therapy, Combination - methods Elephantiasis, Filarial - drug therapy Elephantiasis, Filarial - epidemiology Female Humans Ivermectin - therapeutic use Larva - drug effects Larva - metabolism Male Mali - epidemiology Middle Aged Prevalence Wuchereria bancrofti Wuchereria bancrofti - drug effects Young Adult |
title | The Impact of Six Annual Rounds of Mass Drug Administration on Wuchereria bancrofti Infections in Humans and in Mosquitoes in Mali |
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