Exam (elaborations)

Immunology of Tropical Infectious Diseases Questions and Answers

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Course
Immunology of Tropical Infectious Diseases

Institution
Immunology Of Tropical Infectious Diseases

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Uploaded on September 11, 2024
Number of pages 22
Written in 2024/2025
Type Exam (elaborations)
Contains Questions & answers

immunology of tropical infectious diseases questio

Institution Immunology of Tropical Infectious Diseases
Course Immunology of Tropical Infectious Diseases

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Immunology of Tropical Infectious Diseases
Questions and Answers

1: What is the role of the immune system in combating tropical infectious
diseases? - correct answer -

The immune system plays a crucial role in recognizing and eliminating
pathogens responsible for tropical infectious diseases through innate and
adaptive immune responses.

2: How does the innate immune system respond to tropical pathogens? -
correct answer -

The innate immune system responds to tropical pathogens through physical
barriers, phagocytic cells, natural killer cells, and the release of cytokines
and chemokines to initiate an inflammatory response.

3: What are some common tropical infectious diseases? - correct answer -

Common tropical infectious diseases include malaria, dengue fever,
chikungunya, Zika virus, leishmaniasis, and schistosomiasis.

,4: How does malaria affect the immune system? - correct answer -

Malaria, caused by Plasmodium parasites, triggers an immune response that
includes the activation of macrophages, dendritic cells, and the production
of antibodies. However, the parasite can evade the immune system by
varying its surface proteins.

5: What is the role of antibodies in dengue fever? - correct answer -

In dengue fever, antibodies can neutralize the virus and facilitate its
clearance. However, pre-existing antibodies from a previous dengue
infection can enhance the severity of a second infection through antibody-
dependent enhancement (ADE).

6: How does the chikungunya virus evade the immune system? - correct
answer -

The chikungunya virus can evade the immune system by inhibiting the
production of type I interferons and modulating host cell apoptosis,
allowing it to replicate and spread.

7: What is the significance of T cells in the immune response to Zika virus? -
correct answer -

, T cells, particularly CD8+ cytotoxic T cells, play a significant role in
controlling Zika virus infection by targeting and killing infected cells.

8: How does the immune system respond to Leishmania parasites? - correct
answer -

The immune response to Leishmania parasites involves the activation of
macrophages, which produce nitric oxide to kill the parasites. T-helper cells
(Th1) also play a crucial role in orchestrating an effective immune response.

9: What challenges do schistosomes pose to the immune system? - correct
answer - Schistosomes can evade the immune system by coating themselves
with host proteins, modulating immune responses, and inducing regulatory
T cells to suppress immune activity.

10: How does the immune system recognize tropical pathogens? - correct
answer -

The immune system recognizes tropical pathogens through pattern
recognition receptors (PRRs) that detect pathogen-associated molecular
patterns (PAMPs) on the surface of the pathogens.

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