Due to their low-cost, serological tests are most commonly used in Cameroon and of these, the Widal test is the oldest and most popular method. It tests for antibodies against the O and H antigen of S. Typhi by agglutination in the serum of an infected individual. However, it lacks specificity due to cross-reactivity with many other infections and has to be interpreted carefully in populations where the infection is endemic or actively vaccinated to account for pre-existing antibodies that do not indicate a current or recent infection \cite{Olopoenia2000}. It has also beeing demonstrated to be misused be clinicians and diagnosticians in Cameroon, leading to over-diagnosis \cite{Nsutebu_2002}. These shortcomings has led to the Widal test being removed from clinical guidelines in countries such as