Dr David Kirrage from Public Health England says the risk that any child has caught an infection is "negligible", and they and Moreton School in Wolverhampton are working to reassure parents, after 20 pupils were jabbed with a diabetic testing needle.
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Sunday should start off dry and bright with sunny periods.
A touch of ground frost possible in sheltered parts by morning.
Despite receiving treatment at the scene, the man was pronounced dead shortly after.