Fig. 4From: Epidemiology of asthma exacerbation in children before and after the COVID-19 pandemic: a retrospective study in Chengdu, ChinaProportions of children hospitalized annually for asthma exacerbation who were infected with Mycoplasma pneumoniae (MP), Haemophilus influenzae (HI) or Streptococcus pneumoniae (SP).Back to article page