Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Infants Infected with Respiratory Syncytial Virus Generate Potent Neutralizing Antibodies that Lack Somatic Hypermutation

Eileen C. Goodwin, Morgan S. A. Gilman, Daniel Wrapp, Man Chen, Joan O. Ngwuta, Syed M. Moin, Patricia Bai, Arvind Sivasubramanian, Ruth I. Connor, Peter F. Wright, Barney S. Graham, Jason S. McLellan, Laura M. Walker

Immunity · 2018

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Summary

This study examined the humoral immune response to natural RSV infection in infants, demonstrating that they generate potent neutralising antibodies despite minimal somatic hypermutation—a finding that contrasts with typical affinity maturation seen in adaptive immune responses. The work suggests infants employ an effective but distinct antibody generation mechanism, possibly involving alternative pathways or pre-existing antibody repertoires. These insights may inform understanding of infant immune competence and vaccine design strategies.

UK applicability

RSV is a significant respiratory pathogen in UK infants and children. The findings on innate antibody responses in infected infants may inform UK vaccine development strategies and clinical management of RSV in paediatric populations, though direct translation to UK practice requires contextualisation with local epidemiology and public health priorities.

Key measures

Neutralising antibody titre, somatic hypermutation frequency, antibody heavy chain and light chain sequence analysis, binding affinity measurements, structural characterisation of antibody-antigen interactions

Outcomes reported

The study characterised the neutralising antibody responses generated by infants during natural RSV infection, measuring antibody potency, somatic hypermutation frequency, and antibody maturation pathways. The research identified the structural and functional characteristics of infant-derived neutralising antibodies against RSV.

Theme
Nutrition & health
Subject
Maternal, infant & child nutrition
Study type
Research
Study design
Observational cohort
Source type
Peer-reviewed study
Status
Published
Geography
United States
System type
Human clinical
DOI
10.1016/j.immuni.2018.01.005
Catalogue ID
BFmobghs0w-awov36

Topic tags

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