Wallonia bore the brunt of Belgium’s heatwave excess mortality
Belgian mortality monitoring data reported by 7sur7 points to an exceptional rise in deaths during the recent heatwave, with Wallonia most affected. Sciensano’s Be-MOMO system tracks all-cause mortality against expected levels and links unusual peaks to public health risks including heat, while the latest figures remain preliminary because death registrations arrive with a delay.
Excess mortality shows whether a heatwave translated into a real health impact beyond discomfort or hospital pressure. For readers in Belgium, the key issue is whether warning systems, home care, nursing homes and municipal outreach reached vulnerable people in time, especially in Wallonia.
The subject is Belgium’s rapid all-cause mortality monitoring during a heatwave. The main named entities are Sciensano, which coordinates Be-MOMO; the Royal Meteorological Institute, which provides meteorological data; and Wallonia, the region reported by 7sur7 as most affected by the excess-mortality signal.
Background
Belgian mortality surveillance has tracked heat-related mortality signals before. Sciensano’s dashboard notes an August 2020 mortality peak attributed to a heat wave, and its background references include research on the 2003 European heat disaster, a benchmark for modern heat-health planning.
Impact
Regional — Wallonia is the centre of the reported impact. The finding directs attention to Walloon municipalities, AViQ-linked health planning, nursing homes, isolated older residents and homes that are difficult to cool during prolonged heat.
Opposing perspectives
- Public health authorities
Sciensano’s stated position is that near-real-time mortality monitoring helps detect unusual mortality and can guide or reinforce heat action plans. This view treats an excess-mortality signal as an operational warning for authorities, even before final death-cause data are available.
- Statistical-method caution
Mortality analysts and Sciensano’s own methodological notes stress that rapid all-cause mortality is not the same as a certified cause-of-death count. Registration delays, baseline modelling and the absence of immediate death-cause data mean early signals require careful wording and later confirmation.
Sources & evidence
- View source7sur7Primary· 7sur7.beRetrieved 11 July 2026
- View sourceSciensano Epistat Be-MOMO dashboard· epistat.sciensano.beRetrieved 11 July 2026
- View sourceRoyal Meteorological Institute of Belgium· meteo.beRetrieved 11 July 2026
- View sourceEuroMOMO· euromomo.euRetrieved 11 July 2026
