Tuberculosis (TB) infections among children in the European region rose 10% in 2023, indicating ongoing transmission and the need for immediate public health measures to control the spread, the World Health Organization said on Monday.

WHO's European region, which comprises 53 countries in Europe and Central Asia, reported more than 7,500 cases among children under 15 years of age in 2023, an increase of over 650 cases compared to 2022.

"The worrying rise in children with TB serves as a reminder that progress against this preventable and curable disease remains fragile," said Hans Henri Kluge, WHO's Regional Director for Europe.

Askar Yedilbayev, regional TB advisor for WHO's European region, said in an interview that a rise in overall cases might indicate improved diagnoses. However, it could also result from increased cross-border movement due to the Russia-Ukraine war, the two countries with the highest disease burden in the region.

Children under 15 years of age made up 4.3% of all TB cases in the European Union, a joint report by the WHO and the European Centre for Disease Prevention and Control showed.

This shows an increase in cases in this age group for the third consecutive year, which Yedilbayev said was a "worrisome scenario".

WHO has previously warned that funding cuts from global donors will undo progress in controlling TB infections across low- and middle-income countries. These cuts can hurt TB programs in non-EU countries, fuelling a rise of hard-to-treat strains, the agency said.

Several local, on-ground workforces have been hurt from the funding cuts, and the supply of diagnostics and treatments remains at risk, said Yedilbayev.

TB, among the top 10 causes of death worldwide, is a potentially fatal bacterial infection that mainly affects the lungs and spreads through coughing or sneezing.