Public health care in African countries also has many regional contrasts, but AIDS and malaria are the two most serious problems with difficult solutions. AIDS unfortunately has an alarming degree of uniformity across sub-saharan African countries, but population awareness campaigns are finally starting to have an effect in most countries. Malaria is endemic in certain regions and investments are not enough efficient to prevent high mortality due to the disease, especially in young, low-income populations away from larger centers. Hunger is also a recurring problem, more often in Central African nations without tourism, and in situations of cataclysms or military and civil conflicts. It should be noted that with the exception of malaria, most of these problems can be easily kept far away from the tourist universe.