Objective  The recent worldwide epidemic of Severe Acute Respiratory Disease (SARS) caused over 800 deaths and had a major impact on the health services in affected communities. The impact of SARS on colorectal surgery, particularly service provision and training, is unknown. This paper reports these changes from a single colorectal unit at the centre of the outbreak.

Patients and methods  Hospital databases and electronic patient records covering the 4 months duration of the SARS epidemic and an equivalent period preceding SARS were compared. Data was collected for inpatient admissions, outpatient consultations, operative surgery, colonoscopy and waiting times for appointments or surgery.

Results  The SARS epidemic resulted in reductions of 52% for new outpatient attendances, 59% for review attendances, 51% for admissions, 32% for surgical procedures and 48% for colonoscopies. Major emergency procedures, cancer resections and complex major procedures were unaffected. Operative procedures by trainees reduced by 48% and procedures by specialists reduced by 21%. Patients awaiting early or urgent outpatient appointments rose by 200% with waiting times for colonoscopy increased by a median 3, 5 or 9 weeks for outpatient, inpatient or non‐urgent cases, respectively. The waiting time for minor elective colorectal surgery was extended by 5 months.

Conclusion  SARS resulted in a major reduction in the colorectal surgical caseload. The consequences were evidenced by a detrimental effect on waiting times and colorectal training. However, serious pathology requiring emergency or complex surgery was still possible within these constraints.