Of course we should institute a travel ban on majorly affected nations. Anybody who's even so much as played Pandemic knows this is the first step. I have yet to hear a serious argument as to why we shouldn't. We now have multiple Ebola cases in America explicitly because of our refusal to take this necessary step.
Containment is the first step to resolving this.
If travel is banned to affected nations, then no one will be able to go to the affected nations to assist in the effort against the disease. How can you contain the disease without actually going to the place the disease exists?
Unnecessary travel should, of course, be avoided.
