The cases, which were all group B meningitis, were discovered in December, January, June and July in babies and children of pre-school age. Now the Cornwall and Isles of Scilly Primary Care Trust (PCT) is warning schools and nurseries to be vigilant about the signs of infection. The four cases all occurred in the Castleford area of Cornwall. Dr Brian Guttridge, consultant in communicable diseases at the PCT, said: "While we do typically see about 35 cases...