16 results on '"Otoo, Sampson"'
Search Results
2. Thermal tolerance of mosquito eggs is associated with urban adaptation and human interactions
- Author
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Chakraborty, Souvik, primary, Zigmond, Emily, additional, Shah, Sher, additional, Sylla, Massamba, additional, Akorli, Jewelna, additional, Otoo, Sampson, additional, Rose, Noah H., additional, McBride, Carolyn S., additional, Armbruster, Peter A., additional, and Benoit, Joshua B., additional
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- 2024
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3. Intra-species quantification reveals differences in activity and sleep levels in the yellow fever mosquito,Aedes aegypti
- Author
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Ajayi, Oluwaseun, primary, Susanto, Emily E., additional, Wang, Lyn, additional, Kennedy, Jasmine, additional, Ledezma, Arturo, additional, Harris, Angeli'c, additional, Smith, Evan S., additional, Chakraborty, Souvik, additional, Wynne, Nicole E., additional, Sylla, Massamba, additional, Akorli, Jewelna, additional, Otoo, Sampson, additional, Rose, Noah H., additional, Vinauger, Clement, additional, and Benoit, Joshua B., additional
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- 2024
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4. Extensive variation and strain-specificity in dengue virus susceptibility among AfricanAedes aegyptipopulations
- Author
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Dabo, Stéphanie, primary, Henrion-Lacritick, Annabelle, additional, Lecuyer, Alicia, additional, Jiolle, Davy, additional, Paupy, Christophe, additional, Ayala, Diego, additional, da Veiga Leal, Silvânia, additional, Badolo, Athanase, additional, Vega-Rúa, Anubis, additional, Sylla, Massamba, additional, Akorli, Jewelna, additional, Otoo, Sampson, additional, Lutomiah, Joel, additional, Sang, Rosemary, additional, Mutebi, John-Paul, additional, Saleh, Maria-Carla, additional, Rose, Noah H., additional, McBride, Carolyn S., additional, and Lambrechts, Louis, additional
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- 2023
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5. Extensive variation and strain-specificity in dengue virus susceptibility among African Aedes aegypti populations.
- Author
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Dabo, Stéphanie, Henrion-Lacritick, Annabelle, Lecuyer, Alicia, Jiolle, Davy, Paupy, Christophe, Ayala, Diego, da Veiga Leal, Silvânia, Badolo, Athanase, Vega-Rúa, Anubis, Sylla, Massamba, Akorli, Jewelna, Otoo, Sampson, Lutomiah, Joel, Sang, Rosemary, Mutebi, John-Paul, Saleh, Maria-Carla, Rose, Noah H., McBride, Carolyn S., and Lambrechts, Louis
- Subjects
DENGUE hemorrhagic fever ,AEDES aegypti ,DENGUE viruses ,ZIKA virus ,VIRUS diversity ,AFRICANS ,MOSQUITO vectors ,SEROTYPES - Abstract
African populations of the mosquito Aedes aegypti are usually considered less susceptible to infection by human-pathogenic flaviviruses than globally invasive populations found outside Africa. Although this contrast has been well documented for Zika virus (ZIKV), it is unclear to what extent it is true for dengue virus (DENV), the most prevalent flavivirus of humans. Addressing this question is complicated by substantial genetic diversity among DENV strains, most notably in the form of four genetic types (DENV1 to DENV4), that can lead to genetically specific interactions with mosquito populations. Here, we carried out a survey of DENV susceptibility using a panel of seven field-derived Ae. aegypti colonies from across the African range of the species and a colony from Guadeloupe, French West Indies as non-African reference. We found considerable variation in the ability of African Ae. aegypti populations to acquire and replicate a panel of six DENV strains spanning the four DENV types. Although African Ae. aegypti populations were generally less susceptible than the reference non-African population from Guadeloupe, in several instances some African populations were equally or more susceptible than the Guadeloupe population. Moreover, the relative level of susceptibility between African mosquito populations depended on the DENV strain, indicating genetically specific interactions. We conclude that unlike ZIKV susceptibility, there is no clear-cut dichotomy in DENV susceptibility between African and non-African Ae. aegypti. DENV susceptibility of African Ae. aegypti populations is highly heterogeneous and largely governed by the specific pairing of mosquito population and DENV strain. Author summary: African populations of the mosquito Aedes aegypti are usually thought to be less likely to get infected by flaviviruses compared to Ae. aegypti mosquitoes found outside Africa. While this has been well-demonstrated for Zika virus, it is not clear if the same is true for dengue virus, which is the most common flavivirus in humans. Studying this is complicated by the strain diversity of dengue virus, including four main genetic types, potentially causing different interactions. In this study, we compared several mosquito populations and found that, in general, African mosquitoes were less likely to get infected by dengue virus compared to mosquitoes from outside Africa. However, in some cases, African mosquitoes were just as or even more likely to get infected. The specific strain of dengue virus also influenced how likely African mosquitoes were to get infected, showing that the relationship between African mosquitoes and dengue virus is complex. [ABSTRACT FROM AUTHOR]
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- 2024
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6. Dating the origin and spread of specialization on human hosts in Aedes aegypti mosquitoes
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Rose, Noah H, primary, Badolo, Athanase, additional, Sylla, Massamba, additional, Akorli, Jewelna, additional, Otoo, Sampson, additional, Gloria-Soria, Andrea, additional, Powell, Jeffrey R, additional, White, Bradley J, additional, Crawford, Jacob E, additional, and McBride, Carolyn S, additional
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- 2023
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7. Author response: Dating the origin and spread of specialization on human hosts in Aedes aegypti mosquitoes
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Rose, Noah H, primary, Badolo, Athanase, additional, Sylla, Massamba, additional, Akorli, Jewelna, additional, Otoo, Sampson, additional, Gloria-Soria, Andrea, additional, Powell, Jeffrey R, additional, White, Bradley J, additional, Crawford, Jacob E, additional, and McBride, Carolyn S, additional
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- 2023
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8. Dating the origin and spread of specialization on human hosts in Aedes aegypti mosquitoes
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Rose, Noah H., primary, Badolo, Athanase, additional, Sylla, Massamba, additional, Akorli, Jewelna, additional, Otoo, Sampson, additional, Gloria-Soria, Andrea, additional, Powell, Jeffrey R., additional, White, Bradley J., additional, Crawford, Jacob E., additional, and McBride, Carolyn S., additional
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- 2022
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9. An assessment of mosquito collection techniques for xenomonitoring of anopheline-transmitted Lymphatic Filariasis in Ghana
- Author
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Opoku, Millicent, Minetti, Corrado, Kartey-Attipoe, Worlasi D., Otoo, Sampson, Otchere, Joseph, Gomes, Bruno, de Souza, Dziedzom K., and Reimer, Lisa J.
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wc_880 ,Plasmodium ,Mosquito Control ,Endemic Diseases ,xenomonotoring ,wa_395 ,Mosquito Vectors ,Ghana ,Elephantiasis, Filarial ,qx_301 ,parasitic diseases ,Anopheles ,Animals ,microfilaria ,Female ,Wuchereria bancrofti ,Special Issue Research Article ,qx_515 ,lymphatic filariasis ,Entomology ,Anopheles gravid trap - Abstract
Monitoring vectors is relevant to ascertain transmission of lymphatic filariasis (LF). This may require the best sampling method that can capture high numbers of specific species to give indication of transmission. Gravid anophelines are good indicators for assessing transmission due to close contact with humans through blood meals. This study compared the efficiency of an Anopheles gravid trap (AGT) with other mosquito collection methods including the box and the Centres for Disease Control and Prevention gravid, light, exit and BioGent-sentinel traps, indoor resting collection (IRC) and pyrethrum spray catches across two endemic regions of Ghana. The AGT showed high trapping efficiency by collecting the highest mean number of anophelines per night in the Western (4.6) and Northern (7.3) regions compared with the outdoor collection methods. Additionally, IRC was similarly efficient in the Northern region (8.9) where vectors exhibit a high degree of endophily. AGT also showed good trapping potential for collecting Anopheles melas which is usually difficult to catch with existing methods. Screening of mosquitoes for infection showed a 0.80-3.01% Wuchereria bancrofti and 2.15-3.27% Plasmodium spp. in Anopheles gambiae. The AGT has shown to be appropriate for surveying Anopheles populations and can be useful for xenomonitoring for both LF and malaria.
- Published
- 2018
10. Enhanced Zika virus susceptibility of globally invasive Aedes aegypti populations
- Author
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Aubry, Fabien, primary, Dabo, Stéphanie, additional, Manet, Caroline, additional, Filipović, Igor, additional, Rose, Noah H., additional, Miot, Elliott F., additional, Martynow, Daria, additional, Baidaliuk, Artem, additional, Merkling, Sarah H., additional, Dickson, Laura B., additional, Crist, Anna B., additional, Anyango, Victor O., additional, Romero-Vivas, Claudia M., additional, Vega-Rúa, Anubis, additional, Dusfour, Isabelle, additional, Jiolle, Davy, additional, Paupy, Christophe, additional, Mayanja, Martin N., additional, Lutwama, Julius J., additional, Kohl, Alain, additional, Duong, Veasna, additional, Ponlawat, Alongkot, additional, Sylla, Massamba, additional, Akorli, Jewelna, additional, Otoo, Sampson, additional, Lutomiah, Joel, additional, Sang, Rosemary, additional, Mutebi, John-Paul, additional, Cao-Lormeau, Van-Mai, additional, Jarman, Richard G., additional, Diagne, Cheikh T., additional, Faye, Oumar, additional, Faye, Ousmane, additional, Sall, Amadou A., additional, McBride, Carolyn S., additional, Montagutelli, Xavier, additional, Rašić, Gordana, additional, and Lambrechts, Louis, additional
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- 2020
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11. Climate and Urbanization Drive Mosquito Preference for Humans
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Rose, Noah H., primary, Sylla, Massamba, additional, Badolo, Athanase, additional, Lutomiah, Joel, additional, Ayala, Diego, additional, Aribodor, Ogechukwu B., additional, Ibe, Nnenna, additional, Akorli, Jewelna, additional, Otoo, Sampson, additional, Mutebi, John-Paul, additional, Kriete, Alexis L., additional, Ewing, Eliza G., additional, Sang, Rosemary, additional, Gloria-Soria, Andrea, additional, Powell, Jeffrey R., additional, Baker, Rachel E., additional, White, Bradley J., additional, Crawford, Jacob E., additional, and McBride, Carolyn S., additional
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- 2020
- Full Text
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12. Onchocerciasis transmission in Ghana: the human blood index of sibling species of the Simulium damnosum complex
- Author
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Lamberton, Poppy H. L., primary, Cheke, Robert A., additional, Walker, Martin, additional, Winskill, Peter, additional, Crainey, J. Lee, additional, Boakye, Daniel A., additional, Osei-Atweneboana, Mike Y., additional, Tirados, Iñaki, additional, Wilson, Michael D., additional, Tetteh-Kumah, Anthony, additional, Otoo, Sampson, additional, Post, Rory J., additional, and Basañez, María-Gloria, additional
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- 2016
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13. An assessment of mosquito collection techniques for xenomonitoring of anopheline-transmitted Lymphatic Filariasis in Ghana.
- Author
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Stothard, J. Russell, Webster, Bonnie L., Opoku, Millicent, Minetti, Corrado, Kartey-Attipoe, Worlasi D., Otoo, Sampson, Otchere, Joseph, Gomes, Bruno, de Souza, Dziedzom K., and Reimer, Lisa J.
- Subjects
FILARIASIS ,PREVENTIVE medicine ,ANOPHELES ,INFECTIOUS disease transmission ,MEDICAL screening - Abstract
Monitoring vectors is relevant to ascertain transmission of lymphatic filariasis (LF). This may require the best sampling method that can capture high numbers of specific species to give indication of transmission. Gravid anophelines are good indicators for assessing transmission due to close contact with humans through blood meals. This study compared the efficiency of an Anopheles gravid trap (AGT) with other mosquito collection methods including the box and the Centres for Disease Control and Prevention gravid, light, exit and BioGent-sentinel traps, indoor resting collection (IRC) and pyrethrum spray catches across two endemic regions of Ghana. The AGT showed high trapping efficiency by collecting the highest mean number of anophelines per night in the Western (4.6) and Northern (7.3) regions compared with the outdoor collection methods. Additionally, IRC was similarly efficient in the Northern region (8.9) where vectors exhibit a high degree of endophily. AGT also showed good trapping potential for collecting Anopheles melas which is usually difficult to catch with existing methods. Screening of mosquitoes for infection showed a 0.80–3.01% Wuchereria bancrofti and 2.15–3.27% Plasmodium spp. in Anopheles gambiae. The AGT has shown to be appropriate for surveying Anopheles populations and can be useful for xenomonitoring for both LF and malaria. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
14. Onchocerciasis transmission in Ghana: the human blood index of sibling species of the Simulium damnosum complex
- Author
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Lamberton, Poppy H. L., Cheke, Robert A., Walker, Martin, Winskill, Peter, Crainey, J. Lee, Boakye, Daniel A., Osei-Atweneboana, Mike Y., Tirados, Iñaki, Wilson, Michael D., Tetteh-Kumah, Anthony, Otoo, Sampson, Post, Rory J., Basañez, María-Gloria, Wellcome Trust, and The Royal Society
- Subjects
Adult ,Male ,Human blood index ,Adolescent ,Mycology & Parasitology ,wa_395 ,Host-seeking vectors ,Public Health And Health Services ,Onchocerciasis ,wc_885 ,Ghana ,Ovipositing vectors ,Young Adult ,Vector abundance ,parasitic diseases ,Simulium damnosum (sensu lato) ,Animals ,Humans ,Simuliidae ,Host choice ,Child ,SB ,QR355 ,Research ,Infant ,Feeding Behavior ,Middle Aged ,Insect Vectors ,wa_100 ,wc_695 ,Onchocerca volvulus ,Blood ,Infectious Diseases ,Medical Microbiology ,Child, Preschool ,Female ,Parasitology - Abstract
Background Vector-biting behaviour is important for vector-borne disease (VBD) epidemiology. The proportion of blood meals taken on humans (the human blood index, HBI), is a component of the biting rate per vector on humans in VBD transmission models. Humans are the definitive host of Onchocerca volvulus, but the simuliid vectors feed on a range of animals and HBI is a key indicator of the potential for human onchocerciasis transmission. Ghana has a diversity of Simulium damnosum complex members, which are likely to vary in their HBIs, an important consideration for parameterization of onchocerciasis control and elimination models. Methods Host-seeking and ovipositing S. damnosum (sensu lato) (s.l.) were collected from seven villages in four Ghanaian regions. Taxa were morphologically and molecularly identified. Blood meals from individually stored blackfly abdomens were used for DNA profiling, to identify previous host choice. Household, domestic animal, wild mammal and bird surveys were performed to estimate the density and diversity of potential blood hosts of blackflies. Results A total of 11,107 abdomens of simuliid females (which would have obtained blood meal(s) previously) were tested, with blood meals successfully amplified in 3,772 (34 %). A single-host species was identified in 2,857 (75.7 %) of the blood meals, of which 2,162 (75.7 %) were human. Simulium soubrense Beffa form, S. squamosum C and S. sanctipauli Pra form were the most anthropophagic (HBI = 0.92, 0.86 and 0.70, respectively); S. squamosum E, S. yahense and S. damnosum (sensu stricto) (s.s.)/S. sirbanum were the most zoophagic (HBI = 0.44, 0.53 and 0.63, respectively). The degree of anthropophagy decreased (but not statistically significantly) with increasing ratio of non-human/human blood hosts. Vector to human ratios ranged from 139 to 1,198 blackflies/person. Conclusions DNA profiling can successfully identify blood meals from host-seeking and ovipositing blackflies. Host choice varies according to sibling species, season and capture site/method. There was no evidence that HBI is vector and/or host density dependent. Transmission breakpoints will vary among locations due to differing cytospecies compositions and vector abundances. Electronic supplementary material The online version of this article (doi:10.1186/s13071-016-1703-2) contains supplementary material, which is available to authorized users.
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15. Thermal tolerance of mosquito eggs is associated with urban adaptation and human interactions.
- Author
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Chakraborty S, Zigmond E, Shah S, Sylla M, Akorli J, Otoo S, Rose NH, McBride CS, Armbruster PA, and Benoit JB
- Abstract
Climate change is expected to profoundly affect mosquito distributions and their ability to serve as vectors for disease, specifically with the anticipated increase in heat waves. The rising temperature and frequent heat waves can accelerate mosquito life cycles, facilitating higher disease transmission. Conversely, higher temperatures could increase mosquito mortality as a negative consequence. Warmer temperatures are associated with increased human density, suggesting a need for anthropophilic mosquitoes to adapt to be more hardy to heat stress. Mosquito eggs provide an opportunity to study the biological impact of climate warming as this stage is stationary and must tolerate temperatures at the site of female oviposition. As such, egg thermotolerance is critical for survival in a specific habitat. In nature, Aedes mosquitoes exhibit different behavioral phenotypes, where specific populations prefer depositing eggs in tree holes and prefer feeding non-human vertebrates. In contrast, others, particularly human-biting specialists, favor laying eggs in artificial containers near human dwellings. This study examined the thermotolerance of eggs, along with adult stages, for Aedes aegypti and Ae. albopictus lineages associated with known ancestry and shifts in their relationship with humans. Mosquitoes collected from areas with higher human population density, displaying increased human preference, and having a human-associated ancestry profile have increased egg viability following high-temperature stress. Unlike eggs, thermal tolerance among adults showed no significant correlation based on the area of collection or human-associated ancestry. This study highlights that the egg stage is likely critical to mosquito survival when associated with humans and needs to be accounted when predicting future mosquito distribution., Competing Interests: Declaration of competing interest - The authors declare no conflicts of interest.
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- 2024
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- View/download PDF
16. Extensive variation and strain-specificity in dengue virus susceptibility among African Aedes aegypti populations.
- Author
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Dabo S, Henrion-Lacritick A, Lecuyer A, Jiolle D, Paupy C, Ayala D, da Veiga Leal S, Badolo A, Vega-Rúa A, Sylla M, Akorli J, Otoo S, Lutomiah J, Sang R, Mutebi JP, Saleh MC, Rose NH, McBride CS, and Lambrechts L
- Abstract
African populations of the mosquito Aedes aegypti are usually considered less susceptible to infection by human-pathogenic flaviviruses than globally invasive populations found outside Africa. Although this contrast has been well documented for Zika virus (ZIKV), it is unclear to what extent it is true for dengue virus (DENV), the most prevalent flavivirus of humans. Addressing this question is complicated by substantial genetic diversity among DENV strains, most notably in the form of four genetic types (DENV1 to DENV4), that can lead to genetically specific interactions with mosquito populations. Here, we carried out a continent-wide survey of DENV susceptibility using a panel of field-derived Ae. aegypti colonies from across the African range of the species and a colony from Guadeloupe, French West Indies as non-African reference. We found considerable variation in the ability of African Ae. aegypti populations to acquire and replicate a panel of six DENV strains spanning the four DENV types. Although African Ae. aegypti populations were generally less susceptible than the reference non-African population from Guadeloupe, in several instances some African populations were equally or more susceptible than the Guadeloupe population. Moreover, the relative level of susceptibility between African mosquito populations depended on the DENV strain, indicating genetically specific interactions. We conclude that unlike ZIKV susceptibility, there is no clear-cut dichotomy in DENV susceptibility between African and non-African Ae. aegypti . DENV susceptibility of African Ae. aegypti populations is highly heterogeneous and largely governed by the specific pairing of mosquito population and DENV strain., Competing Interests: Competing interests Authors declare no competing interests.
- Published
- 2023
- Full Text
- View/download PDF
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