I get in trouble every time I say this, but antibiotics like tetracycline are also available through farm supply stores. Look up the dosage for hogs, and that's about equal to the dosage for humans. It's not the same pharmaceuticals as you would get in a pharmacy in the U.S., but it's probably the same as you would get in a hospital in Africa or India, and it's sure better than nothing.

Onward and upward,
airforce