Typhoid Fever Continues to Pose Significant Threat Worldwide, Despite Advances in Treatment

Typhoid fever, caused by the bacterium Salmonella Typhi, remains a major public health concern globally, with 10.9 million cases occurring annually and 116,000 resulting in death, according to a recent report published in the International Journal of Infectious Diseases. The largest burden of disease is concentrated in Africa and Asia, but imported cases in travelers, including those visiting friends and relatives, are also common. While most cases are uncomplicated and respond well to antibiotics, severe disease can occur, particularly in incompletely or untreated cases, leading to high mortality rates.

Key Takeaways:

• The global incidence of typhoid fever is estimated at 10.9 million cases per year, with 116,000 deaths.
• The largest burden of disease occurs in Africa and Asia, with imported cases common in travelers.
• Despite advances in treatment, severe disease can occur, particularly in incompletely or untreated cases, leading to high mortality rates.
• The pathophysiology of neurologic involvement in typhoid fever has been explored in recent animal model studies, highlighting the need for further research on the optimal treatment strategies.
• The role of adjunctive corticosteroids in treating severe typhoid fever is reviewed, with consideration of the uncertainty surrounding the optimal dose and duration of therapy.
• A case of typhoid fever with severe neurologic involvement leading to coma, seizures, and prolonged disability is presented, highlighting the importance of prompt initiation of empiric antibiotics and close monitoring.
• Researchers from Royal Melbourne Hospital have contributed to the understanding of typhoid fever, publishing a study on the pathophysiology of neurologic involvement in the disease.

Statistics:

• 10.9 million cases of typhoid fever occur annually worldwide.
• 116,000 deaths result from typhoid fever each year.
• The majority of cases are concentrated in Africa and Asia.
• Imported cases in travelers, including those visiting friends and relatives, are common.
• Severe disease occurs in incompletely or untreated cases, leading to high mortality rates.

Sources:

• More than a fever: Encephalitis due to typhoid fever. International Journal of Infectious Diseases, 2025;161:108092.
• Researchers from Royal Melbourne Hospital Detail Findings in Typhoid Fever (More than a fever: Encephalitis due to typhoid fever). World Disease Weekly. November 4, 2025; p 80.