One of the activities deployed by the Disease Surveillance Officers in 2022 sentinel surveillance is ovitrapping. 100 ovitraps were set in each of the communities, these consist of 5 ovitraps per house. Ovitraps are set with containers filled with water and placed in ideal places where female mosquitoes could oviposit in them. The traps are allowed to sit for 72 hours before retrieval. On retrieval, the containers are inspected for ribbons that are positive with mosquito eggs. The ovitraps targets the immature stages of domestic and peridomestic container breeders notable among which are Ae. aegypti: the primary vectors of yellow fever and Ae. albopictus. 
Setting of Ovitraps in Mbawer Community, Kwande LGA, Benue State
Preparations of ovitraps for Ndeboishiagu sentinel site, in Izzi LGA, Ebonyi State
Retrieval and inspection of ovitraps for positive ribbons in Agaraga, Kwande LGA, Benue State sentinel site
Inspection and drying of ovitrap ribbons in Ipinu sentinel site, Oju LGA, Benue State
Inspection of ovitrap ribbons in Ohozara sentinel site, Izzi LGA, Ebonyi state
Retrieval and drying of ovitrap ribbons in Ndeboishiagu, Izzi LGA, Ebonyi state
Retrieval and drying of ovitrap ribbons in Ega Ibilla sentinel site, Oju LGA, Benue State
Ovitrapping will help to determine the vectors density; while the eggs collected will be hatched and reared to adult stage for phenotypic and genotypic resistant determination.
