Integrating Aedes Into Existing Malaria Vector Control Systems In Africa

Transcription

1 RBM VCWG meeting 30 Jan 1st Feb 2019 Integrating Aedes Into Existing Malaria Vector Control Systems In Africa Mamadou B. Coulibaly, PhD, PharmD University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali

2 Aedes-Borne Emerging and re-remerging diseases Weetman et al, 2018 Aedes aegypti KBK0K30EQZSVQHS9QA05Q6K5Q10RKAKRK6KHKB0 5QNK8QJ05KRSGKOKUQCKMKRSAQDK9QTKGKBK7K BKGKAKGK.jpg Aedes albopictus dia/commons/thumb/7/73/cdc- Gathany-Aedes-albopictus- 2 2.jpg/493px-CDC-Gathany-Aedesalbopictus-2.jpg

3 What explains the expansion of these emerging/re-emerging diseases? d=ebdc2650c03c1c7fb38945f9e79472faebe89f62&thi d=oip.08ulyql7op8l5mlj_cf2uwhafj&mediaurl=http%3 A%2F%2Fphotos.tradeholding.com%2Fattach%2Fhash23 2%2F190952%2Fdscf1653.jpg&exph=768&expw=1024&q =Trade+of+tires&selectedindex=18&ajaxhist=0&vt=0&ei m=1,6 Proliferation of Aedes as a result of: global trade (Reiter and Sprenger, 1987) and unplanned urbanization; inefficient implementation of vector control programmes due to - inadequate human, financial, and infrastructural capacities; - erratic water supply and associated water storage practices; - ineffective waste disposal; 3

4 Preventing emerging and re-emerging Aedesborne diseases Yellow fever - vaccine Chikungunya no commercially available drugs/vaccines Zika no commercially available drugs/vaccines Dengue Vaccine (Dengvaxia: safety concerns for mass administration) Preventing/reduction: depends largely on controlling mosquito vector populations or interrupting human vector contact 4

5 Vector Control and challenges Historical successful Aedes control programmes o Yellow fever in the Americas (1900s to 1960s) o Dengue in Singapore (1970s to 1980s) and Cuba (1980s to 1990s) Issues with vector control o Expanding Ae. aegypti populations o Expansion of urban centres with poor sanitation o Human travel networks o Inadequate vector control infrastructure o Insufficient resources o Insecticide resistance o Inadequate political will o Vertical implementation 5

6 Integrating Aedes control into existing diseases vector control systems 6

7 Integrating Aedes control into existing diseases vector control systems Roiz et al,

8 Integrating Aedes control into existing diseases vector control systems Roadmap to Support the Implementation of the Global Vector Control Response In the WHO African Region West African Aedes Surveillance Network (WAASuN) 8

9 Integrating Aedes control into malaria vector control systems Integrated Aedes and Anopheles surveillance-monitoring and Evaluation of control programmes o Shared sentinel sites o Mosquito collection Adult - (might be easier) Larvae (might be complicated) /history/mosquito-large.jpg 9

10 Integrating Aedes control into malaria vector control systems Integrated Aedes and Anopheles control o Synergizing tools and approaches Ae. aegypti *LLINs IRS Zooprophylaxis **House screening Unlikely Impact Unlikely Impact significant significant impact impact Day biter Day biter Larval Source Mgmt Impact consider cost and feasibility Ae. albopictus Unlikely significant impact Day biter/exophilic Low or no impact May have some relevant impact Unlikely significant impact Exophilic Impact consider cost and feasibility Impact Impact Some impact Impact Impact consider cost and feasibility An. gambiae s.l. * ** 10

11 Integrating Aedes control into malaria vector control systems - Challenges Same understanding of Integration Others Tse-tse Aedes Integration: Inter & intrasectoral collaboration single vector Environment Finance Agriculture Anopheles Others Territorial administration Environment Finance Agriculture Anopheles Others Territorial administration Integration: Inter & intrasectoral collaborationmultiple vectors 11

12 Integrating Aedes control into malaria vector control systems - Challenges Funding Not enough funding schemes for Aedes surveillance and control Fear from the NMCP of sharing their small budget Training lack or insufficient number of well trained stuff on Aedes and Aedesborne diseases Insufficient political will 12

13 Integrating Aedes control into malaria vector control systems some steps towards more integration Same understanding of integrating Strengthening inter and intra-sectoral collaboration with multiple vectors Identifying diseases overlaps and control opportunities Training Adding expertise on Aedes to Anopheles experts competence Funding agreement Political will

14 Thank you!!! 16