Australia: Elevated seasonal influenza activity continues in June

Event

Australian authorities report high seasonal influenza activity with 87,989 confirmed influenza cases reported between Jan. 1-June 5. This caseload is compared to 326 confirmed influenza cases reported over a similar period in 2021 and is exceeding the five-year reported average. Most cases (47,860) were reported between May 23-June 5. The highest number of cases have occurred in New South Wales (42,283) and Victoria (21,275); however, the risk of infection is currently highest in the Northern Territory (1,110 cases per 100,000 population). This case count represents the most complete data available as of June 22.

Context

Seasonal influenza activity typically peaks during the colder months in Australia, usually June-October. Unusually low seasonal influenza activity was reported during the COVID-19 pandemic in 2020 and 2021 as stringent health precautions implemented to decrease the spread of COVID-19 likely also hampered the spread of influenza.

Seasonal influenza is a highly contagious disease caused by a virus. Symptoms typically appear 2 days after exposure, but can develop up to 4 days after exposure. Typical symptoms are nondescript, including fever (though not in all cases), cough, congestion, aches, and fatigue. The disease occurs in all age groups, but is particularly severe in the elderly or persons with high-risk medical conditions. Influenza vaccinations are recommended yearly since the influenza virus undergoes frequent changes.

Advice

Visit a doctor to ensure vaccination against seasonal influenza. Practice basic health precautions. Seek medical attention if symptoms develop within a week of being in affected areas.