People Infected with M

question 49

Multiple Choice

People infected with M.tuberculosis are always highly infectious to everyone around them-true or false,and why?

• A)True-they are constantly shedding bacteria to the environment around them in high numbers,facilitating transmission.
• B)False-while in the early stages of the illness,their tissues are not irritated and damaged to induce the cough required to spread the organism in respiratory droplets very easily.
• C)True-as the mode of transmission is direct contact,anyone or anything they touch can be infected.
• D)False-since TB requires a very high infectious dose,in the early stages of the disease,the patients aren't producing enough bacteria in their respiratory secretions to be infectious.

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