NEET BIOLOGY

Detailed explanation-1: -It’s caused by a bacterium called Salmonella typhi, which is related to the bacteria that cause salmonella food poisoning. Typhoid fever is highly contagious. An infected person can pass the bacteria out of their body in their poo or, less commonly, in their pee.

Detailed explanation-2: -Salmonella enterica typhi is a gram-negative bacterium that is responsible for typhoid fever and has been a burden on developing nations for generations.

Detailed explanation-3: -Typhoid fever and paratyphoid fever are life-threatening illnesses caused by Salmonella serotype Typhi and Salmonella serotype Paratyphi, respectively.

Detailed explanation-4: -S typhi O positive means active infection of typhoid fever. Active infection indicates the patient has an infection of Salmonella enterica serovar typhi. S typhi H positive means there is a past infection or it shows the result of the immunized person’s serum test report.

Detailed explanation-5: -Salmonella bacteria typically live in animal and human intestines and are shed through stool (feces). Humans become infected most frequently through contaminated water or food.