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Infectious Diseases: Hepatitis and Viral Pathogens

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Infectious Diseases: Hepatitis and Viral Pathogens

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Questions and Answers

What is the transmission route of Hepatitis A virus?

Fecal-oral (correct)
Parenteral, sexual, perinatal
Blood, sexual contact, mother-to-child
Saliva, blood transfusion, transplacentally

Which of the following serological markers is associated with acute Hepatitis B infection?

Anti-HBs
HBsAg
IgM anti-HBc (correct)
HBeAg

What is the incubation period of Syphilis?

10-90 days (correct)
10-14 days
60-90 days
28 days

Which of the following viruses requires coinfection with Hepatitis B virus?

Hepatitis D virus (A) Signup and view all the answers

What is the transmission route of Hepatitis E virus?

Fecal-oral (D) Signup and view all the answers

Which of the following serological tests is used to diagnose HIV infection?

p24 antigen, HIV RNA, PCR (A) Signup and view all the answers

What does the presence of HBsAg indicate?

Active infection and high infectivity (C) Signup and view all the answers

Which HIV gene product is responsible for binding CD4?

gp120 (C) Signup and view all the answers

What is the purpose of the third generation of HIV ELISA?

Detects antibodies and p24 antigen (A) Signup and view all the answers

What is the stage of syphilis characterized by a period of dormancy?

Latent (B) Signup and view all the answers

Which antibody is used to monitor viral load and therapy effectiveness in Hepatitis B infection?

HBV DNA (A) Signup and view all the answers

What is the function of the HIV protein p66?

Reverse transcriptase (C) Signup and view all the answers