The way the migrants see the USA, regardless of its past high viral incident rates, is that it also has vaccine. When they have people poor and dying there is no reason not to face the danger of northern migration. Their only hope is the USA.
The Northern Triad needs to be stabilized with a return of their economy and vaccine. The single dose vaccine would work better there because any time element between doses may be unrealistic.
The hospital facilities are unable to serve the sensitive populations. Containing the seriously ill and death rate in the single dose vaccine will provide hope. The single dose vaccine is successful in creating complete preventive immunity 76 percent of the time and that is a good place for these countries to be.
There also needs to be vigilance for variants regardless of vaccine success.
Long term effects from the virus is important to record as well. My guess in curing those long term illnesses and disabilities lies in genetic medicine. The destroyed cells must be returned. Returning cells to a person can only be found in genetic repair.
“CRISPR” is a good beginning. It is going to take profoundly successful testing before human trials can even be considered. There is no “Fast Track” to human trials.
Cells can be grown in a Petri dish, too. I am thinking that a process similar to skin graphing can be attempted but here again testing has to be perfected before human trials can be attempted. Thinking along those lines, there are already trials of nerve implants in The West countries.
The United Nations and the safety of genetic anything has a place in conventions that secure best practices.