A study was made of all potentially statutorily notifiable bacterial i
nfections diagnosed in faecal samples submitted from symptomatic patie
nts to a single microbiology laboratory during a six-month period. Sal
monella spp, Campylobacter spp or Shigella spp were isolated from 167
patients and 51% of these were formally notified (54% of general pract
ice patients and 47% of hospital patients). Forty-seven percent of cas
es of foodpoisoning (Salmonella spp. and Campylobacter spp) were notif
ied as were 70% of cases of shigella infections. Notification was made
on average 9.4 d after sending a specimen to the laboratory. A questi
onnaire used to ascertain the reasons for non-notification in 80 of 85
cases elicited replies in respect of 78 patients. Four patients infec
ted with Salmonella spp or Campylobacter spp were said not to have bee
n suffering from foodpoisoning. A variety of reasons was given for fai
ling to notify the others, the most common were forgetfulness, not rec
eiving the result of the specimen, or believing someone else had made
the notification.