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Carriage of S. pneumoniae and three respiratory pathogens in the first year of life. The point prevalence of S. pneumoniae and three respiratory in the nasopharynx among 30 infants followed-up from birth to one year (A). The average prevalence of H. influenzae, encapsulated H. influenzae and Hib in the nasopharynx among 30 infants followed-up from birth to one year (B).
