Lewis Mullins died in April last year from pneumonia brought on by chicken pox. He was treated just for chicken pox and medical staff failed to diagnose an underlying bacterial infection.
Coroner Nicola Mundy recorded a narrative verdict and says she's considering writing to the Department of Health highlighting Lewis's case to try and prevent a similar tragedy.
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Frosty, icy start on Sunday with fog patches lingering. In fact the fog patches may be very slow to lift in Lincolnshire
Widespread frost and patchy fog overnight
Wintry showers then frosty tonight, dry and cold on Sunday