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Comparison of Different Sampling Methods to Catch Lymphatic Filariasis Vectors in a Sudan Savannah Area of Mali

Coulibaly, Yaya Ibrahim, Sangare, Moussa, Dolo, Housseini, Doumbia, Salif Seriba, Coulibaly, Siaka Yamoussa, Dicko, Ilo, Diabate, Abdoul Fatao, Coulibaly, Michel Emmanuel, Soumaoro, Lamine, Diallo, Abdallah Amadou, Dembele, Massitan, Traore, Sekou Fantamady, Stanton, Michelle ORCID: https://orcid.org/0000-0002-1754-4894, Koudou, Benjamin Guibehi, Klion, Amy Deborah, Nutman, Thomas B., Kelly-Hope, Louise ORCID: https://orcid.org/0000-0002-3330-7629 and Bockarie, Moses (2022) 'Comparison of Different Sampling Methods to Catch Lymphatic Filariasis Vectors in a Sudan Savannah Area of Mali'. American Journal of Tropical Medicine and Hygiene, Vol 106, Issue 4, pp. 1247-1253.

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Abstract

There is a need for better tools to monitor the transmission of lymphatic filariasis and malaria in areas undergoing interventions to interrupt transmission. Therefore, mosquito collection methods other than human landing catch (HLC) are needed. This study aimed to compare the Ifakara tent trap type C (ITTC) and the Biogents sentinel trap (BGST) to the HLC in areas with different vector densities. Mosquitoes were collected in two villages in Mali from July to December in 2011 and 2012. The three methods were implemented at each site with one ITTC, one BGST, and one HLC unit that consisted of one room with two collectors—one indoor and the other outdoor. The Anopheles collected in 2011 were individually dissected, whereas those from 2012 were screened in pools using reverse transcription-polymerase chain reaction (RT-PCR) to determine the maximum infection prevalence likelihood (MIPL) for Wuchereria bancrofti and Plasmodium falciparum. The dissection of the females also allowed to assess the parity rates, as well its results. Over the 2 years, the HLC method collected 1,019 Anopheles, yields that were 34- and 1.5-fold higher than those with the BGST and ITTC, respectively. None of the dissected Anopheles were infected. The RT-PCR results showed comparable MIPL between HLC and ITTC for W. bancrofti with one infected pool from each trap’s yield (respectively 0.03% [0.0009–0.2%] and 0.04% [0.001–0.2%]). For P. falciparum, no infected pool was recovered from BGST. The ITTC is a good alternative to HLC for xenomonitoring of program activities.

Item Type: Article
Subjects: QX Parasitology > QX 20 Research (General)
QX Parasitology > Insects. Other Parasites > QX 650 Insect vectors
WC Communicable Diseases > Tropical and Parasitic Diseases > WC 880 Filariasis and related conditions (General)
Faculty: Department: Biological Sciences > Department of Tropical Disease Biology
Biological Sciences > Vector Biology Department
Digital Object Identifer (DOI): https://doi.org/10.4269/ajtmh.21-0667
SWORD Depositor: JISC Pubrouter
Depositing User: JISC Pubrouter
Date Deposited: 07 Apr 2022 13:23
Last Modified: 07 Apr 2022 13:23
URI: https://archive.lstmed.ac.uk/id/eprint/20076

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