Fig. 2From: Comparison of acute pneumonia caused by SARS-COV-2 and other respiratory viruses in children: a retrospective multi-center cohort study during COVID-19 outbreakEffects of lopinavir–ritonavir, ribavirin and arbidol on children with COVID-19. Lopinavir-ritonavir, ribavirin, and arbidol were used in about 1/3 of children with COVID-19, but they did not shorten the duration of positive PCR results from pharyngeal swabs for children with COVID-19Back to article page