Three Types of Surveillance Methods

[@luckychombachifwesa3765]

Well explained and very clear.

[@virajsingh8379]

U all doing a great job
African people ar very helpfull

[@anujgautam617]

Thank You for this informative video.

[@ramakrishnamurthyp2842]

wrong information....missing cases surveyed in sentinel surveillance, not in active surveillance...you are providing wrong information to students, confusing the students.

[@nurulfirdaus577]

Thanks for the information❤❤❤

[@AliShaaibu-et7st]

Thanks 4your contribution of an information in video post.

[@kungawomnyimba9259]

Thank you ❤❤❤❤❤🎉

[@manjusuraweera9618]

Great job ♥️

[@syedshaheenshah9852]

Na