Is a measure taken to prevent the spread of a contagious disease by maintaining a physical distance between people and reducing the number of times people come into close contact with each other.
Many people will asked why do we need to do this and does it even help, here is the answer.
Why? When someone coughs or sneezes they spray small liquid droplets from their nose or mouth which may contain a virus. If you are too close, you can breathe in the droplets.