Samaraweera, Nayana Y. “Evaluation of Selected Aspects of Influenza Surveillance System and Describing Influenza Surveillance Data Collected During 2014-2018 of District General Hospital Matara, Sri Lanka”. International Journal of Advances in Medicine 9, no. 3 (February 23, 2022): 286–293. Accessed December 28, 2025. https://www.ijmedicine.com/index.php/ijam/article/view/3329.