Widal test
Start with a brief overview of typhoid fever and its impact on public health globally. Introduce the Widal test as a diagnostic tool used to detect antibodies against Salmonella typhi, the bacterium responsible for typhoid fever. ➢ Understanding the Widal Test: Explain the principle behind the Widal test, which detects specific antibodies (agglutinins) produced by the immune system in response to Salmonella typhi infection. Describe the process of agglutination, where the antibodies clump together with bacterial antigens, indicating a positive...