Cough illness symptoms are key to identifying suspected cases. These symptoms include severe coughing fits, a distinctive sound when breathing in, or vomiting after coughing. Transmission occurs when an infected person coughs or sneezes, releasing respiratory droplets.

A person is considered a confirmed case if they meet certain criteria, such as a positive test result or a link to a laboratory-confirmed case. The outbreak threshold is met when two connected cases occur within a short time frame. Further details about the outbreak are available from the situation report, which provides more information on disease definitions and transmission modes.