[ 56 , 57 , 58 ] From 2017 to 2021, a decreasing trend in incidence was observed, which was 0.85, 1.26, 0.94, 0.26, and 0.75, respectively [ 59 , 60 , 61 , 62 , 63 ].
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Vaccination against <i>Streptococcus pneumoniae</i> in Children Born between 2015 and 2018 in Poland-How Has the Introduction of Free Compulsory Pneumococcal Vaccination Affected Its Uptake?
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