ERHUOTOR, E. E.; EGGON, H. A.; AJIDANI, M. S.; OSEKWEYI, J. O. TYPHOID AND CHOLERA CHRONICLES: THEIR DUAL EFFECT ON LIFE EXPECTANCY IN DELTA STATE, NIGERIA. FUDMA JOURNAL OF SCIENCES, v. 7, n. 5, p. 348 - 355, 31 Oct. 2023.