National Center for Biotechnology Information NCBI NLM MEDLINE humans pubmed abstract nih national institutes of health national library of medicine female male Child Infant Prospective Studies preschool human case-control studies observational study predictive value of tests clinical laboratory techniques / methods* fever / etiology* bacterial infections / complications fever / diagnosis malaria / diagnosis pmid:28464021 pmc5413055 doi:10.1371/journal.pone.0173314 olga de santis mary kilowoko valérie d'acremont bacterial infections / diagnosis herpesvirus 6 malaria / complications roseolovirus infections / complications roseolovirus infections / diagnosis tanzania typhoid fever / complications typhoid fever / diagnosis urinary tract infections / complications urinary tract infections / diagnosis virus diseases / complications virus diseases / diagnosis