The increase in deaths is concentrated almost entirely among people aged 45 and over

Belgium recorded 39 percent more deaths than normal between June 18 and 29 as a sweltering heatwave gripped much of Europe, health authorities said Friday.

The country saw 1,222 excess deaths during the period, of which nearly half were of people aged 85 or over, according to provisional data from the federal health ministry.

“Such a level of excess mortality during a heatwave is unprecedented in our country,” it said in a statement, noting that Belgium had recorded “seven tropical days of temperatures exceeding 30C” as well as “abnormally” warm nights.

The peak in excess mortality was reached on Saturday, June 27.