PCVIS started in 2009 with funding from Gavi, the Vaccine Alliance, and has been conducting research for over a decade to understand the effects of PCV in Kenya. PCVIS is a partnership between KEMRI Wellcome Trust Research Programme, Kilifi County Government Health Services Department and London School of Hygiene & Tropical Medicine.
PCVIS leverages the Kilifi Health and Demographic Surveillance System which has meticulously documented demographic information about the population of Kilifi County since 2000. This provides robust baseline and contextual data which researchers use to measure the impact of health interventions, including vaccines such as PCV. Each resident has a unique identifier allowing their demographic, hospital and laboratory data to be linked. This provides a powerful means of understanding individual and population level patterns of health and disease.