The envisaged research aims to implement the most cost-effective part of the GRACE INTRO intervention (TRACE e-learning, www.acutecough.org), i.e. a web-based communication training and an interactive patient booklet for adults presenting to primary care with LRTI, at national level. For that purpose the investigators will perform a stepped wedge cluster-randomised trial. Stepped wedge randomised trial designs involve sequential roll-out of an intervention to participants (individuals or clusters) over a number of time periods. By the end of the study, all participants will have received the intervention, although the order in which participants receive the intervention is determined at random. Over a period of one year all practices in the 10 Belgian provinces and Brussels (n=11 clusters) will get access to the intervention. The order in which the clusters receive the intervention is determined at random. The general practitioners (GPs) in the intervention phase will be invited to take an educational web-based module, including communication training, to improve prescribing of antibiotics for LRTI and will receive patient booklets to be used interactively during the consultation. The clusters not yet exposed to the intervention will serve as control group. The effect on prescribing behavior will be assessed using monthly Intermutualistic Agency (IMA, www.nic-ima.be) data. Hence, the outcome measurement will have complete response, and will not interfere with the normal routine of the eligible GPs, allowing a more valid estimate of any intervention effect. Since the training will be assessed, and not the eligible practices or GPs, IMA has the legal authority (Art. 153 of the coordinated Law of 14 July 1994) to perform the required analyses. The estimates of the efficacy of the intervention will at the same time describe its effectiveness in daily practice, which is unconventional for a randomized trial (on a behavioural intervention). Given the large sample size, the proposed trial will also provide very precise estimates.