The many ways of communicating using our hands – the Western hand shake and the Indians of putting both palms together and saying vanakkam or namaste. The Japanese would just do without any hands by bowing in deep respect. Image source: Wikipedia
Unfortunately since a hand shake needs the touching of the hands, this unfortunately facilitates the human to human virus transmission. Remember the first Malaysian who got coronavirus after some business meeting in Singapore? He may have been hand shaking too many people and somehow got infected with coronavirus instead.