Dutch health experts say a striking number have been sickened since rates began soaring in August, with most cases among those aged five to 14.
Surveillance data shows rates of the illness, which can prove life-threatening, are already nearly twice as high as the peak recorded last year.
t comes as China battles its own ‘mystery’ pneumonia cluster, with media stating hospitals as being ‘overwhelmed with sick children’.
Terrifying footage reminiscent of scenes during Covid’s darkest days shows health workers in hazmat suits, gloves and masks spraying disinfectant through schools, hallways and outdoors.
Beijing officials have ruled out a new virus as being to blame for the spike. Instead, they insist the rise is down to a surge in seasonal illnesses as the country faces its first full winter without Covid-era curbs.
Read more: Is China’s ‘mystery pneumonia’ (same old script) sweeping Europe ? Netherlands sees alarming surge in similar illness among children – as terrifying video shows hazmat-clad workers in China disinfecting schools