The administration in Ahmedabad has prohibited large public gatherings without prior approval in wake of drastic rise in reported cases of swine flu. Section 144 of the Criminal Procedure Code or CrPC has been invoked which prohibits large assembly of people. Ahmedabad has reported as many as 100 fresh cases in the last 24 hours. While the city has seen an overall 60 per cent rise in swine flu cases in the last one week, more than 1000 cases have been reported from across Gujarat.