We are grateful to the management and the staff of the hospitals for their cooperation and moral support. Our appreciation also goes to Lagos State Health Service Commission and Lagos State Ministry of Health for the cooperation received throughout the period of study. We are equally grateful to Professor E. O. Wahab of Department of Sociology, Lagos State University (LASU), for supplying information on the catchment areas used. We are grateful to the staff members of Department of Microbiology, particularly, Abudul Azzis Anjorin, and Management of LASU for their support.
Buckle GC, Walker FCI, Black RE, 2012. Typhoid fever and paratyphoid fever: systematic review to estimate global morbidity and mortality for 2010. J Glob Health 2: 010401.
Breiman RF 2012. Population-based incidence of typhoid fever in an urban informal settlement and a rural area in Kenya: implication for typhoid vaccine use in Africa. PLoS One 7: e29119.
Marks F 2017. Incidence of invasive Salmonella disease in sub-Saharan Africa: a multicentre population-based surveillance study. Lancet Glob Health 5: e310–e323.
Mogasale V, Maskery B, Ochiai RL, Lee JS, Mogasale VV, Ramani E, Kim YE, Park JK, Wierzba TF, 2014. Burden of typhoid fever in low-income and middle-income countries: a systematic literature-based update with risk-factor adjustment. Lancet Glob Health 2: e570–e580.
Antillón M, Warren JL, Crawford FW, Weinberger DM, Kürüm E, Pak GD, Marks FV, Pitzer VE, 2017. The burden of typhoid fever in low-and middle-income countries: a meta-regression, approach. PLoS Negl Trop Dis 11: e0005376.
Akinyemi KO, Smith SI, Oyefolu AO, Coker AO, 2005. Multidrug resistance in Salmonella enterica serovar Typhi isolated from patients with typhoid fever complications in Lagos, Nigeria. Public Health 119: 321–327.
Akinyemi KO, Coker AO, Olukoya OK, Oyefolu AO, Amorighoye EP, Omonigbehin EO, 2000. Prevalence of multi-drug resistant Salmonella typhi among clinically diagnosed typhoid fever patients in Lagos, Nigeria. Z Naturforsch C 55: 489–493.
Fashae K, Ogunsola F, Aarestrup FM, Hendriksen RS, 2010. Antimicrobial susceptibility and serovars of Salmonella from chickens and humans in Ibadan, Nigeria. J Infect Dev Ctries 4: 484–494.
Uyigue PO, Osadolor HB, 2011. Monitoring of enteric fever and diarrhoea-causing organisms in rural settings in Edo State, Nigeria. Am J Clin Pathol 138: A301.
Kingsley OC, Ifeanyi AO, Edet AE, Smart OC, 2013. Bacteriologic profile and antibiotic susceptibility pattern of suspected septicaemic patients in Uyo, Nigeria. Res J Med Sci 7: 35–39.
Akinwusi PA, Komolafe AO, Olayemi OO, Adeomi AA, 2013. Communicable diseases-related sudden death in the 21st century in Nigeria. Infect Drug Resist 6: 125–132.
Adeleye AI, Adekosoye AI, 1993. Antimicrobial resistance pattern and plasmids survey of Salmonella and Shigella isolated in Ibadan, Nigeria. East Afr Med J 70: 259–262.
Oboegbulam SI, Oguike JU, Gugnanai HC, 1995. Micro-biological studies on cases diagnosed as typhoid/enteric fever in south-east, Nigeria. J Commun Dis 27: 97–100.
Feasey NA, Dougan G, Kingsley RA, Heyderman RS, Gordon MA, 2012. Invasive non-typhoidal Salmonella disease: an emerging and neglected tropical disease in Africa. Lancet 379: 2489–2499.
Steele DA, Burgess DC, Diaz Z, Carey ME, Zaidi KMA, 2016. Challenges and opportunities for typhoid fever control: a call for coordinated action. Clin Infect Dis 62: S4–S8.
Hall RP, van Koppen B, van Houweling E, 2014. The human right to water: the importance of domestic and productive water rights. Sci Eng Ethics 20: 849–868.
Population Reference Bureau, 2016. 2016 World Population Data Sheet, With Special Focus on Human Needs and Sustainable Resources. Available at: https://assets.prb.org/pdf16/prb-wpds2016-web-2016.pdf. Accessd August 1, 2016.
United Nations, 2016. The World’s Cities in 2016. Available at: http://www.un.org/en/development/desa/population/publications/pdf/urbanization/the_worlds_cities_in_2016_data_booklet.pdf. Accessed May 25, 2017. Accessed June 1, 2016.
National Bureau of Statistics, 2012. Federal Republic of Nigeria. Annual Abstract of Statistics, 2012. Available at: http://www.nigerianstat.gov.ng/pdfuploads/annual_abstract_2012.pdf. Accessed July 1, 2016.
United Nations Educational Scientific Cultural Organization (UNESCO) Institute for Statistics. Available at: http://data.uis.unesco.org/index.aspx?queryid=166#. Accessed February 1, 2016.
World Bank, Global Poverty Working Group. Available at: http://iresearch.worldbank.org/PovcalNet/index.htm. Accessed February 1, 2016.
International Monetary Fund (IMF) World Economic Outlook (WEO), 2016. Nigeria DataPortal; GDP by Country 1980–2015. Washington, DC: International Monetary Fund.
Liu L, Oza S, Hogan D, Perin J, Rudan I, Lawn JE, Cousens S, Mathers C, Black RE, 2015. Global, regional, and national causes of child mortality in 2000–13, with projections to inform post-2015 priorities: an updated systematic analysis. Lancet 385: 430–440.
Cowan ST, Steel S, 1993. Identification of family Enterobacteriaceae. Barrow GI, Felthan RKA, eds. Manual for the Identification of Medical Bacteria. Cambridge, United Kingdom: Cambridge University Press, 32.
Bauer AW, Kirby WM, Sherris JC, Turck M, 1966. Antibiotic susceptibility testing by a standardized single disk method. Am J Clin Pathol 45: 493–496.
Ghenghensh KS, Franca E, Tawil K, Wasfy MO, Ahmed SF, Rubino S, Klena JD, 2009. Enteric fever in Mediterranean north Africa. J Infect Dev Ctries 3: 753–761.
Centre for Information and Development (CID), 2006. Annual Report. Tripoli, Libya: CID, Secretary of Health and Environment, 12–14.
Afifi S, Earhart K, Azab MA, Youssef FG, El Sakka H, Wasfy M, Mansour H, El Oun S, Rakha M, Mahoney F, 2005. Hospital-based surveillance for acute febrile illness in Egypt: a focus on community-acquired bloodstream infections. Am J Trop Med Hyg 73: 392–399.
Mogasale V, Mogasale VV, Ramani E, Lee JS, Park JY, Lee KS, Wierzba TF, 2016. Revisiting typhoid fever surveillance in low and middle income countries: lessons from systematic literature review of population-based longitudinal studies. BMC Infect Dis 16: 35.
Akinyemi KO, Oyefolu AO, Salu OB, Adewale AO, Fasure AK, 2006. Bacterial pathogens associated with tap and well waters in Lagos, Nigeria. East Cent Afr J Surg 11: 111–117.
Akinyemi KO, Iwalokun BA, Foli F, Oshodi K, Coker AO, 2011. Prevalence of multiple drug resistance and screening of enterotoxin (stn) gene in Salmonella enteric serovars from water sources in Lagos, Nigeria. Public Health 125: 65–71.
Al-Emran HM 2016. Diagnosing Salmonella enterica serovar Typhi infections by polymerase chain reaction using EDTA blood samples of febrile patients from Burkina Faso. Clin Infect Dis 62: S37–S41.
Al-Emran HM 2016. A multicountry molecular analysis of Salmonella enterica serovar Typhi with reduced susceptibility to ciprofloxacin in sub-Saharan Africa. Clin Infect Dis 62: S42–S46.
Eibach D 2016. The emergence of reduced ciprofloxacin susceptibility in Salmonella enterica causing bloodstream infections in rural Ghana. Clin Infect Dis 62 (Suppl 1): S32–S36.
Baiyewu L, 2012. Fake Antibiotics Malaria Drugs Most Common—NAFDAC. Punch. Available at: http://www.punchng.com/news/fake-antibiotics-malaria-drugs-most-common-nafdac/. Accessed June 1, 2016.
Mancini N, Carletti S, Ghidoli N, Cichero P, Burioni R, Clementi M, 2010. The era of molecular and other non-culture-based methods in diagnosis of sepsis. Clin Microbiol Rev 23: 235–251.