ArticleNature communications2026
Mucosal IgA to pre-fusion F protein predicts protection from RSV infection in a high burden setting.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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19 authors.
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Abstract
Respiratory syncytial virus (RSV) causes over 100,000 annual deaths, predominantly in low- and middle-income countries, yet immunological correlates of protection remain poorly defined in high-burden settings. This study aims to identify immunological correlates of protection against RSV infection, and to compare the relative contribution of systemic and mucosal antibody responses. We use data from an intensively sampled prospective household cohort study in The Gambia, following 342 participants over 12 months with weekly PCR testing and longitudinal serum and nasal sampling. Using a Bayesian hierarchical framework jointly modelling antibody kinetics, household transmission dynamics, and imperfect PCR ascertainment, we characterise humoral immunity to RSV-A antigens across systemic and mucosal compartments. Mucosal IgA to the pre-fusion F (pre-F) protein is the strongest predictor of protection against infection (AUC = 0.72), outperforming serum anti-Pre-F IgG (AUC = 0.66). Serum and mucosal responses are largely compartment-independent (r = 0.02-0.28), with a combined serum and mucosal anti-Pre-F model outperforming either alone, and both biomarkers correlating with RSV-A neutralising titres. These findings have direct implications for designing RSV infection-preventing vaccine strategies.
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