Modeste Fadéby Gouissi
1,2*, Sahidou Salifou
3, Aléodjrodo Patrick Edorh
1,4, William Anges Yadouleton
2,3, Armel Djenontin
2, Sahabi Bio-Banganna
2, Sègbèhin Geoffroy Augustin Gouissi
5, Martin Akogbeto
21 Interfaculty Centre of Training and Research in Environment for Sustainable Development (CIFRED), University of Abomey-Calavi (UAC), 03 BP 1463 Jericho Cotonou, Benin
2 Entomological Research Center of Cotonou (CREC), 06 BP 2604 Cotonou, Benin
3 Research Laboratory in Applied Biology, Department of Animal Production and Health, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, 01 BP 2009 Cotonou, Benin
4 Department of Biochemistry and Cell Biology, Faculty of Science and Technology (FAST), University of Abomey-Calavi (UAC), 01 BP 526, Cotonou, Benin
5 Faculty of Health Sciences (FSS), University of Abomey-Calavi (UAC), 01 BP 188 Cotonou, Benin
Abstract
Introduction:
To overcome the problems of periodic re-impregnation of mosquito nets
and low rates of treatment, the commune of Aguegues was chosen to
evaluate the effects of Olyset® nets on malaria transmission and against
An. gambiae. Methods: 87 old Olyset® nets
installed five years ago were identified in the village ‘Akpadon’. 10
untreated nets were installed in 10 structures of type “a bedroom and
parlour” in the village ‘Akodji’. Four rooms without nets were
identified in the village ‘Donoukpa’. Entomological and epidemiological
evaluations were conducted during the May to October 2011. 24 sessions
of capture or 2088 men-nights resulted in the capture of 30,608
mosquitoes. Results: The entrance of anopheles
was significantly reduced in the village with Olyset® nets. 45% of
mosquitoes captured inside rooms with Olyset® nets were found dead after
24 hrs of observation. Overall, parasitemia was very low in the treated
village (4.52%). 18 (4.64%) cases of malaria fever were from Akpadon
with 7.5% positive blade smear, 29 (10.98%) were from Akodji with 8.37%
positive blade smear, and 80 (95.23%) come from Donoukpa with 38.09%
positive blade smear. The Olyset® nets and untreated net were adjusted
hemoglobin levels. Conclusion: Olyset® net had a very high knock down effect and is an alternative in malaria control