Because of a defective immune response, HIV-positive individuals are at an increased risk of Salmonella infection.  Although scientists have known for years that Salmonella poses greater risks in HIV-positive individuals, a recent study published in Science is the first to provide a scientific explanation.

The researchers studied the type of Salmonella bacteria commonly passed through food, such as uncooked meat and eggs. In most healthy individuals, Salmonella food poisoning causes vomiting and diarrhea; however, in HIV-positive individuals, it can be fatal.

In particular, HIV-infected individuals living in underdeveloped countries are…