How many refugees have full medical records?
ALL drugs have possible side effects.
Without a full medical history / exam - why should drug manufacturers take the risk?
"I don't know if I'm allergic to your drug, give it to me."
"Do you promise not to sue us if you have an allergic reaction?"
"Hell, no. I'll sue your pants off."
"Then we aren't going to give you the drug."
{Ridiculous public outrage against the drug company}