Primary prevention, defined by the WHO as a key strategy for reducing the incidence of disease, relies in part on vaccination, the individual and collective effectiveness of which is recognised. In France, despite vaccination coverage targets of 95 per cent for most vaccines, current studies highlight persistent gaps, particularly among at-risk populations, such as people aged over 65, those with compromised immune systems and cancer patients. Despite a high theoretical uptake rate (83.7 per cent), studies (COVARISQ, 2020 and Granger, 2022) have shown insufficient vaccination coverage (e.g. 9.5 per cent for pneumococcal vaccine, 40.2 per cent for influenza). The aim of this protocol is to assess the current state of vaccination coverage in oncology, particularly amongst breast cancer patients, and to identify factors influencing adherence in order to improve prevention.
