Influenza cases in Singapore increased in the week of August 16 to 22, 2026, with the positivity rate among influenza-like illness samples rising to 36.6%, up from 24% the previous week [1, 2, 3]. Authorities noted there is no indication the infections are more severe than usual [1, 2, 3].
This current rate remains below last year's peak of 43.9% recorded in January 2025 [1, 2, 3]. Seasonal influenza viruses typically circulate year-round in Singapore, with higher activity from May to August and December to March [1, 2, 3].
Health officials advise people at higher risk of severe influenza—including seniors over 65, children aged six months to five years, and those with underlying medical conditions—to receive annual vaccinations [1, 2, 3].
People showing mild acute respiratory infection symptoms are urged to stay home until symptoms resolve. If going out is necessary, they should minimize social interactions, wear masks, and avoid crowded or vulnerable groups [1, 2].
Health agencies continue to monitor influenza trends closely as the country approaches the typically higher flu season months.
