A large effective population size for established within-host influenza virus infection.

ABSTRACT: Strains of the influenza virus form coherent global populations, yet exist at the level of single infections in individual hosts. The relationship between these scales is a critical topic for understanding viral evolution. Here we investigate the within-host relationship between selection and the stochastic effects of genetic drift, estimating an effective population size of infection N_e for influenza infection. Examining whole-genome sequence data describing a chronic case of influenza B in a severely immunocompromised child we infer an N_e of 2.5 × 10⁷ (95% confidence range 1.0 × 10⁷ to 9.0 × 10⁷) suggesting that genetic drift is of minimal importance during an established influenza infection. Our result, supported by data from influe

SUBMITTER: Lumby CK 

PROVIDER: S-EPMC7431133 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature