Pellagra lives!
"Niacin deficiency (pellagra)

Niacin deficiency is generally due to a lack of dietary niacin and its precursor tryptophan, an essential amino acid contained in protein of good quality [12]. Cases and outbreaks have been observed and reported in 1988-1989 in refugee camps in Ethiopia, Malawi, Zimbabwe, and other African countries. Pellagra occurs where maize, which is low in both niacin and tryptophan, has been the primary relief grain and where little complementary food rich in protein has been given. Even though the distributed general ration has included beans as a protein source, the quality has often been so poor that excessive cooking has been necessary (e.g. up to eight hours) to make the beans edible. Often the beans cannot be used because fuel shortages preclude such long cooking times. When a niacin- and/or tryptophan-deficient diet is consumed, the lead time for developing the signs of pellagra is about two to three months. Cases of pellagra were reported among refugees in Zimbabwe, Swaziland, Malawi, and Zaire in 1989."