How frequently should one wash hands to keep coronavirus at bay?

COVID-19 is an infectious disease caused by the novel coronavirus, which typically spreads via respiratory droplets released from the nose or mouth of a infected person when he/she with Covid-19 coughs, sneezes, or talks. Anyone who is within 6 feet of that person can get exposed to these respiratory droplets carrying viral particles and breathe it into their lungs. The infectious droplets can also land on your nose or mouth or eyes through contaminated hands. Studies also found the new coronavirus can live on surfaces "for hours to a day." Therefore, health experts have been advising people to wash their hands frequently with soap and water or regularly clean them with an alcohol-based hand. But how often should you wash your hands? An expert answers this question in the above video.