Typhoid Fever in Africa: Endemic Countries and Prevention Strategies

Typhoid fever, caused by Salmonella enterica serovar Typhi, remains a significant public health burden across sub-Saharan Africa. The following countries have documented endemic transmission or recurrent outbreaks:

Endemic African Countries (WHO/CDC Data)

Angola, Benin, Botswana, Burkina Faso, Burundi, Cameroon, Chad, Democratic Republic of the Congo, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Liberia, Madagascar, Malawi, Mali, Mauritania, Namibia, Niger, Nigeria, Rwanda, Senegal, Sierra Leone, Somalia, South Africa, South Sudan, Eswatini (formerly Swaziland), Tanzania, Togo, Zambia, Zimbabwe.

Transmission & Risk Factors

• Fecal-oral route: contaminated water, food, or direct contact.
• Urban slums with inadequate sanitation and water infrastructure.
• Seasonal flooding contaminating water sources.
• Asymptomatic carriers (1–4% of infected) perpetuate transmission.
• Antimicrobial resistance (MDR, XDR strains) complicates treatment.

Prevention: A Multi-Layered Approach

1. Vaccination

• Typhoid conjugate vaccine (TCV): Single dose, approved ≥6 months, longer protection, suitable for infants. WHO recommends routine use in endemic areas.
• Vi polysaccharide vaccine: ≥2 years, requires booster every 2–3 years.
• Oral Ty21a: ≥5 years, 3–4 doses, less used in mass campaigns.

2. Water, Sanitation, and Hygiene (WASH)

• Safe water supply (chlorination, filtration, boiling).
• Improved sanitation (latrines, sewage treatment).
• Handwashing with soap at critical times.
• Food safety: thorough cooking, avoiding raw produce washed in unsafe water.

3. Surveillance & Outbreak Response

• Strengthen lab capacity for blood culture and antimicrobial susceptibility testing.
• Rapid case detection, contact tracing, and targeted vaccination in hotspots.

4. Traveler Precautions

Vaccination ≥2 weeks before travel; strict food/water precautions; consider standby antibiotics (azithromycin) for high-risk itineraries.

Sustained investment in TCV introduction, WASH infrastructure, and antimicrobial stewardship is essential to reduce typhoid’s toll in Africa.