Infection control in the setting of the office based clinic, involves the early detection of disease; disease prevention through vaccination as in influenza and pneumococcal vaccinations; and through screening for asymptomatic disease as in tuberculosis. Family physicians play an important role in these aspects within the community. Although influenza vaccination is effective, the take up rate of vaccination locally is low. Annual vaccination with the current vaccines are strongly recommended in high risk populations such as the elderly, the immunocompromised and, those with co-morbidities. The inactivated trivalent vaccine is the most commonly used. Latent Tuberculosis (TB) Infection is asymptomatic and often goes undetected. Prevention of progression to overt TB can be achieved by identifying high risk persons and the early detection by either the tuberculin skin test or interferon gamma release assays (IGRAs). Invasive pneumococcal disease can lead to significant morbidity and mortality in the young and elderly. In the preventive control of this disease, there are two types of pneumococcal vaccines currently available – the polysaccharide vaccine and the conjugate vaccine. Recommendations for the two different vaccines are in accordance with different at risk populations.

INTRODUCTION: We conducted a descriptive study to evaluate any changes in practice behaviour regarding the provision of hydrocortisone and lignocaine (H&L) injections among doctors and how an H&L injection is priced following a disciplinary proceeding decision. A doctor had been fined SGD 100,000 for failing to obtain informed consent before an H&L injection. METHODS: We performed a survey shortly after the disciplinary decision to ascertain: (a) the category of the respondent; (b) whether the respondent provided H&L injections and how much he charged before the decision; and (c) after the decision. All members of the Singapore Medical Association and College of Family Physicians Singapore are doctors and were invited to participate. RESULTS: 1,927 doctors responded to the survey. Prior to the decision, 804 doctors did not perform H&L injections; this increased by 20.4% to 968 after the decision. The number of doctors who gave H&L injections decreased by 164 (14.6%), from the previous 1,123. Pre-decision, doctors who determined their own price for H&L injections charged a median pricing ≤ SGD 100. Post-decision, the median charge rose to > SGD 100 to SGD 200. At higher price bands, the number of doctors who charged > SGD 1,000 increased eight-fold, from eight to 65. CONCLUSION The study demonstrated how a disciplinary decision can affect practice behaviour, and specifically how doctors may choose to not offer a service, an example of defensive medicine through avoidance behaviour. It also showed how prices for a service can rise following such a decision, which demonstrates the concept of negative general deterrence in sentencing.