Immunoglobulin M (IgM), which is found mainly in the blood and lymph fluid, is the first antibody to be made by the body to fight a new infection.As you can see you are in the process of getting typhoid by a recent infection

If the results of the Typhidot Test are positive, it indicates that the person has an infection of the Salmonella species. How do you read a Typhidot test? If IgG and IgM are present in the typhoid test, it indicates acute typhoid fever.