There's not much you can do really apart from keep washing your hands and keep them away from your face. You don`t have to just be near someone who has it (by near the WHO means within about 3 feet), you are going to be exposed to the virus if it is on money, self serve screens, immigration touch pads and just about anything really. Then you touch your mobile phone, car steering wheel etc. Meticulous hygiene is the only way. As for fear, there is no point. You can be careful and scared or careful and not scared. Having fear makes no difference.