Bengaluru: Karnataka Chief Minister B.S. Yediyurappa on Monday said those coming to the state from Chennai and Delhi will have to undergo three days of institutional quarantine followed by 11 days of home isolation.Until now a seven-day institutional quarantine was prescribed for those returning from Maharashtra, while there was no mandatory institutional quarantine for asymptomatic people returning to Karnataka from other states.Those returning from states other than Maharashtra were asked to quarantine themselves at home."Those coming from Maharashtra are subjected to seven days of institutional quarantine followed by seven days of home quarantine, while those coming from Chennai and Delhi will have to go for three days of institutional.