At this point closing the borders would most likely be pretty useless...think of it this way...You have a barn, with a horse...said horse leaves the barn through one of any doors you have on every side. You shove the horse back in one door and while you are closing it, he runs out another. You repeat the scenario over and over....until suddenly you realize that all the doors are closed but the barn is empty and the horse is galloping down the road.
Closing the borders would be a little like that. We can't keep the Mexicans from crossing illegally on the best of days. Border patrol agent's are stretched thin just keeping the drugs and illegals from crossing where ever they have a chance. We are in the process of building a very costly and (so far) very unpopular fence between us and Mexico , and of course there is still the river. If I lived in Mexico, and thought I was going to die if I stayed...darn tooting I'd be trying to get out. That is why a pandemic will happen. It will be impossible to contain it within a countries borders...because of fear. People will panic, they will go where they think they are safe...and damned the consequences. They will come here even if they know they are sick. You can run, but you can't hide....bacteria /viruses are everywhere.
How will world responds now that the horse has exited the barn? The next few weeks are going to be very important to our future. Hopefully most of the cases will remain mild and this will be a practice run for all the pandemic planners. They will be studying for the next 20 years on how to get better at planning and making manuals. People will get better at figuring ways around the system. That's just the way people are.
On a more personal note: I am feeling better. Still off work as I'm still hacking, coughing and can barely talk. My throat swabs are still pending, I take it the State Health Department is a little bit swamped right now. Now, if I were dead, they would put a rush on it and would know tomorrow, but since I prefer the present (with me alive and hacking), I'll just wait my turn for my results. Stay safe out there, wash your hands, wash your hands, wash your hands...and avoid people like me who are hacking their lungs out...even if they are using anti-viral tissues that kill 99.9 percent of cold and flu viruses', it's that 0.1 percent that will get ya every time.