Fig. 2From: Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) antigen detection in the Emergency Department: data from a pediatric cohort during the fourth COVID-19 wave in ItalyNumber of accesses to the Emergency Department (ED). The significant difference (p < 0.01) in the number of accesses pre / post expansion of the vaccination campaign in groups A and C is demonstrated with *Back to article page