Lost Boys Of Sudan - An excellent USA based charity, working on the ground in southern Sudan to promote health and education, including the provision of free, life saving mosquito nets - http://lostboysschoolsforsudan.org/

UK Fly Screens - Fly screen products and services - www.ukflyscreens.co.uk

Know before you go - Excellent health advice before you travel -  www.fco.gov.uk/en/travel-and-living-abroad