Here's a few ways to think about the travel issue:
1) Risk of quarantine. We won't know for another month or so whether quarantines are going to continue to be the response or if they will finally admit that the horse is out of the barn and there is no use in quarantining anyone anymore. I do not expect the attempt to restrict this virus to China to be successful because of the large percentage of cases that are asymptomatic or mild, like a common cold, and the inability to test everyone with a cold for the virus. (Also the current test gives a lot of false negatives.) Traveling to any foreign country, even European countries, might include a risk of being quarantined there if that is the response to future outbreaks. Soon the US will be unable to bring back all quarantined or infected Americans. Do buy traveler's health insurance if you go and if you're traveling to third world countries, buy insurance with Medevac coverage. On the other hand, a month from now they may finally admit it's too late for quarantines and your risk traveling may be no greater than your risk of contracting it at home.
2) Risk of contracting it while traveling: Planes with their recycled air, crowded airports, trains and buses may increase your risk if you aren't normally exposed to crowds. Washing your hands frequently and wearing a mask will protect you from a lot of that risk (not all). Masks are not available to buy but fairly easy to sew if you know someone with sewing skills. Not as good as a N95 mask but pretty good for this use (I've been making some for my family). I wouldn't go on a cruise ship right now as they are germ factories in the best of situations (but then again, I don't go on cruises anyway because I have the worlds worst motion sickness).
3) Inexpensive travel opportunities: once the virus is widespread and quarantines are no longer being used, traveling may not pose a bigger risk than being home if you wash hands frequently and wear a mask. If you're young and healthy you may be able to pick up some killer travel deals because the travel industry will be hurting.
4) Perspective - the true fatality rate is most likely in the 0.3-0.6% range. This would put the likelihood of US deaths, if 20% of the population contracts the virus, at about 4-8 times a typical flu season's deaths. Not exactly zombie apocalypse numbers, but concerning. It is unknown whether this virus will be seasonal or not - if it is, it may start to die down for the summer and recur next winter.
5) Countries not reporting coronavirus - do not assume that Africa, South America, and especially Indonesia are safe because they aren't reporting coronavirus cases yet. Indonesia almost certainly DOES have cases, based on the spread in surrounding countries, so the lack of reported cases is suspicious. Africa has numerous ties to China and almost certainly has the virus too but lacks the public health capacity to test for it efficiently.
In short - assume it will not be successfully contained to China, there's no predicting how other countries will respond as it starts to spread, washing hands and wearing a mask are your best protection, 90% of cases may be mild or asymptomatic, older people and people with underlying health conditions are at the most risk but even healthy young people can die of it. I predict that in 2 months we will have a much clearer picture of how other countries will respond to the eventual spread, and whether it will start to die down for the summer - or not.
Oh - and don't wait around for a vaccine. It will probably be two years before there is enough for routine vaccinations at a minimum.