👉 Pseudotyphoid is a bacterial infection that primarily affects individuals who are underweight or have compromised immune systems. It is caused by the bacterium Salmonella typhi, which can also affect other organisms such as poultry and livestock. The symptoms of pseudotyphoid include abdominal pain, fever, nausea, vomiting, diarrhea, and weight loss. Treatment typically involves antibiotics to help fight off the infection.