Girl's asthma death a 'canary' warning for London pollution, inquest told

Expert says Ella Kissi-Debrah, nine, faced exquisite' risk and criticises lack of efforts to tackle toxic air

A young girl who suffered a fatal asthma attack thought to have been triggered by dangerous levels of air pollutants was a canary" signalling the risk to other Londoners, an inquest has heard.

Ella Kissi-Debrah died aged nine in February 2013 having suffered numerous seizures and being taken to hospital almost 30 times in the previous three years.