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School closures do not affect Rt decrease in Lombardy and Campania.
(A, C) Median Rt in the indicated 7 days periods (±5–95% Credible Intervals) in Lombardy (A) and Campania (C). Days of school opening and closure are indicated.
(B, D) First order derivative of Rt in Lombardy (B) and Campania (D). Days of school opening and closure are indicated.
