Question

Typhoid bacteria or infection is found in lungs.

Hint:

Typhoid is diagnosed using the Widal test (detecting antibodies against Salmonella O and H antigens) or through blood, stool, or bone marrow cultures. It is primarily treated with antibiotics and prevented through sanitation and vaccination.

Answer 1

Step 1: Analyzing Typhoid Pathophysiology:
Typhoid fever is a systemic, acute infectious disease caused by the bacterium Salmonella enterica serovar Typhi (S. Typhi).

Step 2: Tracking the Path of Infection:

• The bacteria are transmitted via the fecal-oral route through contaminated food or water.
• Upon ingestion, the bacteria pass through the stomach acid and colonize the small intestine, where they attach to and penetrate the intestinal mucosal epithelial cells (specifically Peyers patches).
• They then enter the lymphatic system and the bloodstream, spreading to the liver, spleen, bone marrow, and gallbladder, causing a systemic infection.
• The primary site of infection and pathology remains the gastrointestinal tract, which can lead to intestinal complications like bleeding or perforation in severe cases. It is not a localized pulmonary (lung) infection (unlike tuberculosis or pneumonia).

Step 3: Conclusion and Correction:
Therefore, the statement is False.
Corrected Statement: “Typhoid bacteria or infection is primarily found in the gastrointestinal tract (intestines) and spreads systemically, not in the lungs.”