Will herd immunity help stop Coronavirus?

The world is under the grip of Coronavirus and the scientists are in the race to find its vaccine. Another concept of 'herd immunity' has come forward to fight the Coronavirus. 
What is herd immunity? How will it help in defeating Coronavirus? Will it stop the spread of COVID-19? Watch the discussion over the matter with Dr Puneet Mishra and Dr Sandeep Budhiraja here, in this video.