I'm far from an expert on the subject, but I am coordinating business impact details on a daily basis for my manufacturing company, so I have had to quickly educate myself during the last month. Here's my 2 cents...
In terms of concern about simply contracting the virus, general risk for most of us will be very low. Don't get me wrong, recorded cases in the U.S. are almost assuredly going to escalate quickly, but they will primarily be near major ports and/or international airports. In other words, unless you live near one of those areas, your chances of contracting the virus are virtually nil. In addition, while there have been reports about the virus living on solid surfaces for up to 10 days, it does not survive for more than an hour in a low temp environment, and it can be quickly neutralized with common disinfectants like peroxide and lysol. So my general advice in this area would be to treat this just like you would a normal flu season. Limit travel, disinfect as much as possible, and don't be afraid to ask schools/clubs/churches what they're doing to disinfect. If nothing, bring a couple cans of lysol with you
Now, economic impact is a completely different story. The stock market will recover, but I can tell you that our plants in China are just now returning to near normal production levels, and our supply base throughout China is only ~ 60%. In a nutshell, if we go back to just before lunar new year holidays in China, we've lost about a month out of the year. Can we catch up? Sure, but our customers are experiencing similar impact, and even their forecasts are now being dialed down in some cases. So it's not really a question about can everyone catch up. It's a question about whether the order book will be the same as it was before all this. There are plenty of reports from other global companies essentially reporting the same, and it's just hard to tell how this will all play out at the moment. Especially now that Europe is experiencing a sharp increase in reported cases, speculation is that Iran is understating its actual numbers, and it's believed that the first case of the virus actually being transmitted while on U.S. soil(Sacramento, CA) was just yesterday.
Long story short, the answer to the questions depends on what you're concerned about, but I'll be the first to say that I think we(the U.S.) is a bit late to the party in terms of taking this very seriously.