At the inception of a general practice well child clinic, a checklist card was introduced into the clinic notes to summarize specific and relative contraindications to immunizations. This card was used by the practice nurses as they ran the immunization procedures during the clinic. A failure on the checklist led to a consultation with the clinic doctor who decided whether to proceed with the immunization. Of 155 immunizations given during the six-month period, only 23 (15%) failed the checklist and required the child to be assessed by the clinic doctor. Of these, nine (39%) were for simple upper respiratory tract infection. All the children were deemed fit to receive immunization. Only one child was found to have a specific contraindication to pertussis. The checklist cards allowed the smooth operation of the immunization procedures by practice nurses who were able to check comprehensively whether there were any contraindications and whether immunizations were being inappropriately refused.