Yohannes, Keflemar, Paul Roche, Jenean Spencer, and Alan Hampson. “Annual Report of the National Influenza Surveillance Scheme, 2002”. Communicable Diseases Intelligence 27 (June 30, 2003): 161–172. Accessed April 4, 2026. https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2376.