I’d have all my shots done, like for a trip to Uganda.
Make sure you have the human diploid rabies, plague, meningitis and the whole alphabet of hepatitis shots, in addition to the usual yellow fever, polio, typhoid & tetanus immunizations.
(”Pincushion City!”)
A good backpacking water filter until you can make a “BioSand” filter for your home/hut/hovel/cave.
Pocket Ref 4th Edition [Paperback] Thomas Glover $8.68 Amazon http://www.amazon.com/Pocket-Ref-Edition-Thomas-Glover/dp/1885071620/ref=dp_ob_title_bk
Finally, your favorite Leatherman, Swiss Army Knife, Gerber, etc with belt sheath & lanyard (I’m cheating a bit here with the lanyard. Mine is 50’ of nylon parachute cord.)