Severity of influenza illness by seasonal influenza vaccination status among hospitalised patients in four South American countries, 2013–19: a surveillance-based cohort study

Annette K. Regan, Carmen Sofia Arriola, Paula Couto, Lindsey M. Duca, Sergio Loayza, Francisco Nogareda, Walquíria Aparecida Ferreira de Almeida, Julian Antman, Soraya Araya, Marcela Alejandra Avendaño Vigueras,

The Lancet Infectious Diseases · 2022 · 29 citations · 23 references

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