A perpetual observational study (POS) is a prospective observational study that continuously enrols participants with a shared characteristic, for example a particular infection or condition or, in this case, pregnant women. Data are collected mainly through routine care, and can inform the design of future trials and observational studies, for example by identifying sites seeing a high number of patients with the condition of interest or with patients with particular characteristics. This protocol describes how to conduct a POS to collect aggregated site-level data describing site characteristics, the number and characteristics of patients seen, and point prevalence surveys of vaccination uptake and infections. It is designed to be adaptable to different types of maternal and child health services.
Access Protocol