Prevention of mumps.

the Birmingham findings. The overall pneumonia rate in Birmingham was higher (400h) than in Glasgow (26%°), where pneumonia was taken to mean either consolidation on chest radiograph or a chest infection which in the judgment of the attending physician required antibiotics. It would be interesting to know -what "confirmation" by chest radiography means in the Birminghamstudy, since the difference may be explained by differing definitions. We have been reluctant to draw definite conclusions from the complication rate in those children immunised against pertussis compared with those not immunised, since the numbers are small, and this may also apply to the Birmingham study. However, overall findings are similar, confirming that whooping cough still causes substantial numbers of hospital. admissions for a prolonged and unpleasant illness and that immunisation appears to protect children from being -admitted to hospital with the disease, either by preventing it altogether or by preventing serious complicatioris.