National Center for Biotechnology Information NCBI NLM MEDLINE humans pubmed abstract nih national institutes of health national library of medicine research support non-u.s. gov't female male Child Infant preschool respiratory tract infections / complications gastroenteritis / epidemiology fever / etiology* bacterial infections / complications mary kilowoko valérie d'acremont malaria / complications typhoid fever / complications urinary tract infections / complications virus diseases / complications respiratory tract infections / epidemiology* malaria / epidemiology pneumonia / complications virus diseases / epidemiology* tanzania / epidemiology pneumonia / epidemiology ambulatory care facilities bacterial infections / epidemiology* gastroenteritis / complications pmid:24571753 doi:10.1056/nejmoa1214482 blaise genton typhoid fever / epidemiology urinary tract infections / epidemiology