Replication data for : Loa loa microfilaremia and dementia: a community-based cross-sectional study in southern Cameroon.

They were assembled to jointly characterise, within the same individual, cognitive and functional status, exposure to chronic parasitic infections, and the associated cardiovascular, renal, and sociodemographic markers. This data collection addresses the near-complete absence of individual-level data linking parasitic exposure and cognitive ageing in a region where these infections are nonetheless highly prevalent.

The acquisition aimed to estimate the frequency of cognitive impairment and dementia, and then to examine their association with filarial exposure — in particular Loa loa microfilaraemia — with other helminthiases, with markers of arterial stiffness and subclinical atherosclerosis (PWV, IMT), and with cardiometabolic risk factors. It further aimed to produce an individual-level dataset — structured, standardised, and reusable — combining, within the same population, quantitative parasitological phenotyping, domain-specific cognitive assessment, and cardiovascular characterisation.