Hot tip, if you’re in Japan and don’t want to shake hands right now. Bow first. I find people of Japan will shake hands to make you feel welcome if you don’t bow.

I just had a young doctor in a hospital shake my hand, I would say out if the important cultural need to be polite and pay respect to someone older. I don’t care or blame him even though I was surprised.

On a side note, I would say upwards of 75% of people in Tokyo are wearing masks