In addition to a ban on large-scale events, Pritzker and Chicago Mayor Lori Lightfoot urged organizers of public and private events expected to draw more than 250 people to postpone them until May 1 as the number of confirmed cases of COVID-19 in the state climbed. With the diagnosis of seven new patients, including the first child in Illinois, the total number of cases since the start of the outbreak stood at 32 as of Thursday evening.