Antimalarials a must!
A backpack is probably best unless you are doing an organized trip, when a suitcase/holdall should be fine as well.. Again, a waterproof jacket will come in handy as will sturdy shoes/boots if you plan to do the walking safari in South Luangwa NP. A basic first aid kit, and if you plan to travel extensively into rural areas then an emergency kit, containing syringes would be worth taking, never risk aids/HIV for anything.......! Outside of Lusaka it can be very hard to find good quality film, and even then it may be ridiculously expensive, it would be very wise to buy what you need before you get here, otherwise stock up in Lusaka. A mosquito net for camping outdoors, unless doing an organized trip and then you tour company should provide them. A torch is essential if you will be out in rural areas, but it will proabably come in handy elsewhere too.
