Creating mosquito-free outdoor spaces using transfluthrin-treated chairs and ribbons
| dc.creator | Paliga, John | |
| dc.date | 2020-11-18T08:52:45Z | |
| dc.date | 2020-11-18T08:52:45Z | |
| dc.date | 2020-03 | |
| dc.date.accessioned | 2022-10-25T09:19:08Z | |
| dc.date.available | 2022-10-25T09:19:08Z | |
| dc.description | A Dissertation Submitted in Partial Fulfillment of the Requirement for the Degree of Master of Science in Public Health Research of the Nelson Mandela African Institution of Science and Technology | |
| dc.description | Residents of malaria-endemic communities spend several hours outdoors performing different activities such as cooking, story-telling or eating; thereby exposing themselves to potentially-infectious mosquitoes. This compromises indoor interventions, notably longlasting insecticide-treated nets (LLINs) and indoor residual spraying (IRS). This study characterized common peri-domestic spaces in rural south-eastern Tanzania, and assessed protective efficacies of transluthrin-treated chairs and hessian ribbons against mosquitoes. Two hundred households were surveyed, and their most-used peri-domestic spaces physically characterized. Protective efficacies of these two prototyped interventions were tested outdoor in 28 households in dry and wet seasons, using volunteer-occupied exposure-free double net traps. Center for Diseases Control and Prevention miniature light traps (CDC-LT) were used to estimate host-seeking mosquito densities within outdoor kitchens. Field-collected Anopheles arabiensis and Anopheles funestus mosquitoes were exposed underneath the chairs to estimate 24h-mortality. Approximately half (52%) of houses had verandas. Aside from these verandas, most houses also had peri-domestic spaces where residents stayed most times (67% of houses with verandas and 94% of non-veranda houses). Transfluthrin-treated chairs reduced outdoor-biting An. arabiensis densities by 70-85 % while transfluthrin-treated hessian ribbons caused 77-81% reduction in the general peri-domestic area. Field-collected An. arabiensis (99.4%) and An. funestus (100%) exposed under transfluthrin-treated chairs died. Most houses had actively-used peri-domestic spaces where exposure to mosquitoes occurred. The transfluthrin-treated chairs and ribbons reduced outdoor-biting malaria vectors in these peri-domestic spaces, and also elicited significant mortality among pyrethroid-resistant fieldcaught malaria vectors. These two new prototypes, if developed further, may constitute new options for complementing LLINs and IRS with outdoor protection against malaria and other mosquito-borne pathogens in areas where peri-domestic human activities are common. | |
| dc.format | application/pdf | |
| dc.identifier | https://dspace.nm-aist.ac.tz/handle/20.500.12479/1007 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/94776 | |
| dc.language | en | |
| dc.publisher | NM-AIST | |
| dc.rights | Attribution-NonCommercial-ShareAlike 4.0 International | |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.subject | Peri-domestic spaces | |
| dc.subject | Transfluthrin-treated chairs | |
| dc.subject | Hessian ribbons | |
| dc.subject | Spatial repellents | |
| dc.subject | Outdoor-biting | |
| dc.subject | Malaria vectors | |
| dc.title | Creating mosquito-free outdoor spaces using transfluthrin-treated chairs and ribbons | |
| dc.type | Thesis |