They say the inappropriate use of steroids caused many cases . No new cases of the condition have been reported since last Saturday . The inappropriate use of steroids , which can suppress the immune system , worsened the illness in a majority of the patients , the doctors said . The infections include enterovirus 71 , Je suis and dengue . Most of the cases have come from southern China .
They say the inappropriate use of steroids caused many cases . No new cases of the condition have been reported since last Saturday . The infections include enterovirus 71 , Je suis and dengue . Most of the cases have come from southern China .