He's not panicking.While fear-stricken hypochondriacs are stampeding Costco to buy out all the hand sanitizer, I’m endeavoring to remain calm and doing no more than routine hygiene. What is the responsible thing to do? Am I supposed to be worried? Am I like Gen. Sedgwick, foolishly joking about something that might actually kill me? Germs are not bullets and, as dangerous as coronavirus may be, its lethality seems mainly limited to the elderly. Well, I’m 60, but still vigorous enough to feel confident that my immune system can cope with a virus (to which I may or may not have been exposed).