Lots of people in this thread are being ridiculous. Think, people. You remind me of the Chinese after the tsunami hit and Fukushima became a blighted city. Even though they had nothing to worry about (Japan was their sea wall) the Chinese started buying iodine salt and were actually fighting each other over basic supplies. Meanwhile. the Japanese were cool, calm, collected.
Why people here are rushing to buy water, toilet paper and other necessities is beyond me. No one is doing that here in NYC and we're the most vulnerable. Why? Because just like China, Korea, Japan and Europe, we have a high population density. People here rarely drive so we're packed like sardines in subways to get from A to B. Luckily, America is like Africa, a bunch of bantustans which makes a pandemic much harder to spread. The rest of the country has people much further spread out, making it very difficult for this virus to spread. And once someone in a certain community has it, thanks to our free press, everyone will know about it.
Look at the cases so far in this country. The worst hit has been a nursing home, a Jewish orthodox community and...a cruise ship. These are tight areas with the nursing home and cruise ship having a disproportionate amount of old people. Compare this with China, Korea, Italy, and Japan, countries with some of the oldest populations on earth living like sardines. The one exception here is Iran, which has a very young population (average age being 32). However, just as elsewhere, the virus appears to have caught fire with the very old (in this case, the powerful and elite), with the religious capital of Qom being the source of the epidemic there. Also, most of the population is in the far west, with everywhere else being sparsely populated.
The sporadic cases in California probably originated from healthcare workers not taking the necessary precautions.
IMHO, I think so long as the government and media do their job, this virus will be manageable here. We need to bar Koreans and Italians from entering this country. But I think politics will get in the way. I think the source of new cases will continue to come from abroad. I simply do not believe, given our population density, that the coronavirus will infect Americans with the same intensity as it has Iran, Italy, S. Korea, China and, to a lesser extent, Japan. We just need to make sure it doesn't hit our elderly communities, since they are the most vulnerable.