Firstly, it is standard to wear professional masks for babies, avoid taking them to areas where diseases are prevalent, and reduce activities in crowded public places, especially places with poor air flow, such as public baths, hot springs, theaters, KTV, shopping malls, stations, airports, docks, exhibition halls, etc. Secondly, avoid babies eating hands, using hands to pull out nostrils, rubbing eyes, do not touch the surface of objects in public areas (especially elevator buttons and other frequently touched surfaces), to maintain baby hand hygiene. In addition, avoid your baby touching or eating wild animals outside, i.e. wild game.