Why is influenza particularly dangerous for children under five?

Young children have developing immune systems and narrower airways, making them more susceptible to severe complications like pneumonia and bronchiolitis from influenza.

Does the National Centre for Disease Control (NCDC) track flu cases?

Yes, the NCDC reports on influenza activity, noting over 22,000 cases and 130 deaths in the first half of the year, including many child hospitalizations.

Why do I need an annual flu shot for my child?

Influenza viruses constantly evolve, requiring an updated vaccine each year to ensure effective protection against the most prevalent strains.

Home / Health / Flu's Hidden Danger: Kids Under Five at Risk

Flu's Hidden Danger: Kids Under Five at Risk

19 Dec

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Summary

Influenza causes serious illness and hospitalizations in children under five.
Over 22,000 flu cases and 130 deaths reported in the first half of the year.
Annual vaccination is crucial as flu viruses constantly evolve.

Flu's Hidden Danger: Kids Under Five at Risk

Influenza remains a serious, often underestimated, health threat for children under five. What may seem like a simple fever can rapidly escalate into severe respiratory illness, necessitating hospital care. The NCDC has reported over 22,000 laboratory-confirmed influenza cases and more than 130 deaths in the first half of 2025, with a notable number of children requiring hospitalization. Globally, influenza virus positivity rates in South East Asia ranged between 10-30% in early 2025, highlighting widespread activity.

Unlike childhood diseases preventable by a few doses, influenza requires an annual vaccine due to the virus's constant evolution and waning immunity. The 2025 southern hemisphere vaccine, for instance, already includes new strains. However, a significant "loss to follow-up" occurs, with many children not returning for their booster shots. Data suggests only a third of children who start influenza vaccination return for their second dose the following season, leaving a substantial portion unprotected.