Yes..evolutionary biologists??? I'm certain one immigrant is not responsible for this disease. It's ridiculous to even imagine that if this one person, already carrying/infected would spread it to the USA and not have already then 100% contaminated all Haiti by now.
It doesn't even make sense in ratio and or timeline that one person could cause such an outbreak epidemic and be the sole cause. Come on with the blaming! HIV has been around a
lot longer than that!!!