MICRO 2340 – The most likely outcome of Mycobacterium tuberculosis

10 Jun MICRO 2340 – The most likely outcome of Mycobacterium tuberculosis

Question
Question 21

The most likely outcome of Mycobacterium tuberculosis infection in healthy individuals is

Severe acute pulmonary infection

Eradication of the infection with no or minor symptoms

Death

None of the above

· Question 22

Antigenic variation allows HIV and other pathogens to escape from the recognition of

Adaptive immune system

· Question 23

HIV can be transmitted by casual contactsuch as the sharing of food utensils, towels and bedding, swimming pools, telephones, or toilet seats.

True

False

· Question 24

Mycobacterium tuberculosis can avoid mechanisms of the innate immune system

True

False

· Question 25

Microorganisms causing person-to-person diseases can not live outside the human body

True

False

· Question 26

Treatment of H. pillory infection only with strong anti-acids is

Very effective

Ineffective

Effective only in immunocompetent individuals

Effective only in immunocompromised individuals

· Question 27

In many female patients the diagnosis of Chlamydia trachomatis is established after symptoms of infertility. This late manifestation of the infection is mainly determined by

Tissue damage caused by the infection.

· Question 28

To prevent transmission of Mycobacterium tuberculosis we should block

Contaminated water

Aerosols from infected persons

Contaminated food

All the above are correct

· Question 29

The most likely outcome of Mycobacterium tuberculosis infection in severe immunodeficient individuals is

Severe acute pulmonary infection

Eradication of the infection with no or minor symptoms

Acute pulmonary infection with no or minor symptoms

It depends on the antibiotic resistance characteristics of the M. tuberculosis causing the infection

· Question 30

The most effective (s) intervention to control of M. tuberculosis infection is

Vaccination at early ages

Control measures that include: education about the disease and early diagnosis and treatment of the infection

Prophylactic antibiotic treatment to all individuals

All the above statements are correct

· Question 31

Prevention of phagocytosis is a pathogenic mechanism present in Mycobacterium tuberculosis

True

False

Question 32

Select the correct statement

Microorganisms causing STDs can live for long periods of time outside the human body.

Microorganisms causing STDs can not live outside the human body

Microorganisms causing STDs can live in domesticated animals.

Microorganisms causing STDs can be transmitted by contaminated water

· Question 33

Chlamydia trachomatis can live inside phagocytes

True

False

· Question 34

The immune response plays an important role in the pathogenesis of Chlamydia trachomatis infection

True

False

· Question 35

Chlamydia trachomatis infection usually has major symptoms that made the early diagnosis possible

True

False

· Question 36

Mycobacterium tuberculosis latent infection needs to be treated because

It is highly contagious

It could progress to an active infection if immune depression occurs

Mycobacterium tuberculosis latent infection does not need treatment

Mycobacterium tuberculosis latent infection is only treated after has progressed to acute pulmonary infection

· Question 37

After introduction of penicillin in the clinic the incidence of syphilis decreased significantly however the incidence of gonorrhea increased. This trend in the course of these sexually transmitted disease are mainly due to:

Gonorrhea develops more often resistance to penicillin than syphilis

· Question 38

The most important (s) challenge that sexually transmitted disease imposes to their control is (are):

There are not effective treatments that can control spreading

The complicated ways of transmission determine that transmission is almost unstoppable.

Very often infected individuals do not seek for treatment.

All of the above are correct

· Question 39

Indicate which pathogens can multiply inside phagocytes

Chlamydia trachomatis and Neisseria gonorrheae

Mycobacterium tuberculosis and Chlamydia trachomatis

Neisseria gonorrheae and Treponema pallidum (causative agent of syphilis)

All of the above are correct

· Question 40

Urease is an important virulence factor in

C. trachomatis

M. tuberculosis

H. Pylori

S. aureus

· Question 41

In some individuals the adaptive immune response controls the spreading and multiplication of Mycobacterium tuberculosis but do not cure the infection. This condition is called:

Abortive TB infection

Chronic TB infection

Acute TB infection

Latent TB infection

· Question 42

Mycobacterium tuberculosis latent infection needs to be treated because

The severity of the symptoms

It is highly contagious

It is associated with high mortality rate in healthy adults

None of the above is correct

· Question 43

Sexually transmitted disease always has major symptoms that are difficult to ignore by patients

True

False

· Question 44

Antigenic variation allows HIV and other pathogens to escape from the recognition of

· Question 45

HIV evades the immune system by mutating small regions of viral proteins. This mechanism is called antigenic variation. What would be your prediction?

Antigenic variation more likely will evade the innate immune system

Antigenic variation more likely will evade the adaptive immune system