It might have something to do with people remembering a previous disease outbreak, it might also be primarily a question of how collectivist vs individualist th

It might have something to do with people remembering a previous disease outbreak, it might also be primarily a question of how collectivist vs individualist the societies are and how strongly the population follows government suggestions/orders. Considering that, you'd expect South Korea or Japan to do better than Germany, Germany to do better than the US or Italy. And even within Germany, you'd expect large cities to do worse, with Berlin leading the charge. Would Hamburg be affected as much if it wasn't for their holidays falling right into that time?