Global spatial dynamics and vaccine-induced fitness changes of Bordetella pertussis.
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Authors
Barkoff, Alex-Mikael
Bosch, Thijs
Vestrheim, Didrik F
He, Qiushui
Zavadilova, Jana
Guillot, Sophie
Toubiana, Julie
Publication Date
2022-04-27Journal Title
Sci Transl Med
ISSN
1946-6234
Publisher
American Association for the Advancement of Science (AAAS)
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Lefrancq, N., Bouchez, V., Fernandes, N., Barkoff, A., Bosch, T., Dalby, T., Åkerlund, T., et al. (2022). Global spatial dynamics and vaccine-induced fitness changes of Bordetella pertussis.. Sci Transl Med https://doi.org/10.1126/scitranslmed.abn3253
Abstract
As with other pathogens, competitive interactions between Bordetella pertussis strains drive infection risk. Vaccines are thought to perturb strain diversity through shifts in immune pressures; however, this has rarely been measured because of inadequate data and analytical tools. We used 3344 sequences from 23 countries to show that, on average, there are 28.1 transmission chains circulating within a subnational region, with the number of chains strongly associated with host population size. It took 5 to 10 years for B. pertussis to be homogeneously distributed throughout Europe, with the same time frame required for the United States. Increased fitness of pertactin-deficient strains after implementation of acellular vaccines, but reduced fitness otherwise, can explain long-term genotype dynamics. These findings highlight the role of vaccine policy in shifting local diversity of a pathogen that is responsible for 160,000 deaths annually.
Sponsorship
European Commission Horizon 2020 (H2020) ERC (804744)
Identifiers
External DOI: https://doi.org/10.1126/scitranslmed.abn3253
This record's URL: https://www.repository.cam.ac.uk/handle/1810/335039
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