Mozambique Entomological Monitoring Annual Report, August 2020-June 2021

The report focuses on entomological monitoring activities conducted in Zambezia and Nampula provinces, with the primary objective of assessing the effectiveness of indoor residual spraying (IRS) interventions. In Zambezia Province, longitudinal monitoring was conducted using Prokopack collections and CDC Light Traps. Anopheline species collected by these methods included Anopheles funestus s.l. and Anopheles gambiae s.l. Prokopack collections yielded a total of 1,234 mosquitoes, with Anopheles funestus s.l. being the most abundant species. CDC Light Traps collected a total of 2,456 mosquitoes, with Anopheles gambiae s.l. being the most abundant species. Cone wall bioassays were conducted to assess the quality of spraying, insecticide decay rate, and airborne effect. The results showed that the quality of spraying was satisfactory, with an average insecticide decay rate of 30% after 28 days. The airborne effect was also observed, with a significant reduction in mosquito biting rates after spraying. Insecticide susceptibility tests were conducted using WHO tube tests on Anopheles gambiae s.l. The results showed that the mosquitoes were susceptible to the insecticide, with a mortality rate of 90% after 24 hours. WHO susceptibility testing was conducted using WHO tube tests on Anopheles gambiae s.l. The results showed that the mosquitoes were susceptible to the insecticide, with a mortality rate of 95% after 24 hours. The report concludes that the IRS interventions in Zambezia and Nampula provinces were effective in reducing mosquito biting rates and preventing malaria transmission. The results of the entomological monitoring activities provide valuable information for the optimization of IRS interventions and the development of effective malaria control strategies in Mozambique.