MCQ IN MEDICINE

Detailed explanation-1: -These infected animals and their fleas serve as long-term reservoirs for the bacteria. This is called the enzootic cycle.

Detailed explanation-2: -It is caused by the bacterium, Yersinia pestis. Humans usually get plague after being bitten by a rodent flea that is carrying the plague bacterium or by handling an animal infected with plague. Plague is infamous for killing millions of people in Europe during the Middle Ages.

Detailed explanation-3: -Plague is caused by Yersinia pestis, perhaps one of the most important bacterial pathogens in human history. It occurs in epidemics and pandemics with extremely high mortality when untreated. Prevention and rapid treatment are essential to avoid large outbreaks and the death of those infected with this pathogen.

Detailed explanation-4: -The vector of transmission for Y. pestis is the flea, usually Xenopsylla cheopsis. The flea becomes infected with bacteria by feeding on a rodent infected with Y. pestis.

Detailed explanation-5: -Vectors for plague disease are organisms called fleas. They harbor the plague causing bacteria and transmit the disease from one person to another.-Xenopsylla is the most common type of flea that transmits plague bacteria.