Letter: Adverse effects of oestrogen replacement therapy.

similar clinical picture can also be produced by adenoviruses. In 11 out of 13 children with a pertussis-like picture Connors et all showed adenoviruses and not Bordetella pertussis or B parapertussis to be the cause. Occasionally anallergic bronchitis may simulate whooping cough. If, therefore, the actual incidence of whooping cough is lower than that reflected in the notification rates, stress on vaccination may need altering. AVINASH MITHAL Chest Clinic, Lincoln