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035). The children of HCWs in the seroprevalence study lost antibodies more often ( = 0.017). Initial IgG titers of the children who remained positive six months after the infection were significantly higher ( = 0.008). Most children infected by SARS-CoV-2 maintain a positive serological response six months after the infection. Those children who lost their IgG titer were more frequently asymptomatic or mildly symptomatic, presenting with low antibody titers after the infection. Most children infected by SARS-CoV-2 maintain a positive s