in a week that saw the sensex drop nearly 5700 points coronavirus fears shaved off 2919 points on 12 march the steepest singleday fall in market history et wealth looks at some of the biggest crashes in the past two decades the worst singleday falls and market reaction to some of the viral outbreakshow sensex reacted to viral outbreaksthe markets took a hit during the course of the viral but managed to recover within six monthssarsduration of epidemic janmar 2003 101recommendedstories for youstock market hit by coronavirus reasons for turmoil what equity investors should do nowcovid19 8 things you should do now instead of investingfocus on what will not change in uncertain timesnext six months aprsep 2003 445avian influenzaduration of epidemic janaug 2004 123next six months sep 2004feb 2005 288eboladuration of epidemic dec 2013feb 2014 11next six months maraug 2014 283zikaduration of epidemic nov 2015feb 2016 134next six months maraug 2016 197source ace equity10 worst singleday falls market fall has been defined as a drop of 20 from its peak source ace equity