Bismuth Sulphite Agar (BSA)- Composition, Principle, Preparation, Results, Uses


Bismuth Sulphite Agar (BSA) is a highly selective medium used for isolating Salmonella spp., particularly Salmonella Typhi, from food and clinical specimens. Salmonella Typhi is the causative agent of typhoid fever, a serious systemic infection that can be fatal if left untreated. Salmonella spp. are gram-negative bacilli that belong to the Enterobacteriaceae family and are widely distributed in nature. They can cause various types of infections in humans and animals, ranging from gastroenteritis to septicemia.