Hepatitis B- only the DNA type of virus

Question 1

What is another name for Hepatitis B?

Answer 1

• Aka: serum hepatis or Dane particle.

Question 2

Which family does Hepatitis B belong to?

Answer 2

• It belongs to the Hepadnaviridae family.

Question 3

What type of infection does Hepatitis B cause, and which organ does it primarily affect?

Answer 3

• Viral infection that primarily attacks the liver (hepatocyte), causing both acute and chronic diseases. = more sever and fetal than HAV

Question 4

How does the incubation period for Hepatitis B typically range?

Answer 4

• Ranges from 45 to 160 days, with an average of 120 days.

Question 5

What is the genetic nature of the Hepatitis B virus?

Answer 5

• Hepatitis B is a double-stranded DNA virus.

Question 6

What is the mode of transmission for a hepatitis B that resembles HIV and can be contracted through various means?

Answer 6

The mode of transmission for a disease resembling HIV includes contact with infectious blood, semen, and other body fluids. This can occur through:

a. Birth to an infected mother
b. Sexual contact with an infected person
c. Sharing of contaminated needles, syringes, or other injection drug equipment
d. Needle sticks or other sharp instrument injuries

Question 7

What is the family of viruses to which Hepatitis B belongs?

Answer 7

• Hepatitis B is a DNA virus of the hepadnaviridae family of viruses.

Question 8

What is the previous name for HBsAg?

Answer 8

• HBsAg was previously known as the “AUSTRALIA ANTIGEN.”

Question 9

What does the presence of HBsAg indicate regarding HBV infection?

Answer 9

• An active infection, either acute or chronic.

Question 10

When is HBsAg the best indicator of infection with hepatitis B?

Answer 10

• Chronic or acute infection with hepatitis B.

Question 11

How is HBsAg used as a marker screen for patients?

Answer 11

• To assess if a patient has had a previous infection with hepatitis B or has not yet been exposed to hepatitis A or B.

Question 12

Why is it important to test for HBsAg in patients?

Answer 12

• Assess whether a patient needs to receive the hepatitis B vaccine or a booster shot

Question 13

Where is HBcAg typically found within the HBV?

Answer 13

• HBcAg is found within the core of the intact HBV or viral agent.

Question 14

Why is HBcAg not detectable in serum?

Answer 14

• Because it is exclusively found in liver cells (hepatocytes) and tissues. Detecting it would require a liver biopsy.

Question 15

Is HBcAg routinely tested in hepatitis profile testing?

Answer 15

• No, HBcAg is not routinely tested in hepatitis profile testing

Question 16

What does the presence of HBeAg indicate in serologic markers for HBV?

Answer 16

• Indicates chronic hepatitis and a high level of the virus.

Question 17

Is HBeAg a reliable marker for the presence of HBV?

Answer 17

• Yes, HBeAg is a reliable marker for the presence of a high level of HBV in the body.

Question 18

Which liver enzyme elevations are typically seen at the same time as the appearance of Anti-HBc?

A) SGOT/AST
B) SGPT/ALT
C) GGT
D) Alkaline phosphatase

Answer 18

B) SGPT/ALT

Question 19

In which category of individuals can Anti-HBc be found?

A) Acute hepatitis patients
B) Chronic hepatitis patients
C) Asymptomatic carriers
D) Individuals with hepatitis A

Answer 19

C) Asymptomatic carriers

Question 20

When is Anti-HBc the only marker present during an HBV infection?

A) During the acute phase of infection
B) During the chronic phase of infection
C) During the recovery phase of infection
D) During the window period of infection

Answer 20

D) During the window period of infection

Question 21

What does the presence of Anti-HBe indicate in the context of Hepatitis B infection?

A. Active viral replication
B. Recovery phase and low infectivity
C. Acute infection
D. Chronic infection

Answer 21

B. Recovery phase and low infectivity

Question 22

When is Anti-HBe typically the first serologic evidence of in Hepatitis B infection?

A. During the acute infection phase
B. During the chronic infection phase
C. During the convalescence period
D. Throughout the entire course of infection

Answer 22

C. During the convalescence period

Question 23

What is the primary function of Anti-HBs in relation to HBV?

a) It depends on maintaining a healthy body.
b) It measures the duration of HBV vaccination.
c) It bestows immunity to further HBV infection.
d) It boosts lymphocyte levels.

Answer 23

c) It bestows immunity to further HBV infection.

Question 24

How long after Hepa B vaccination is Anti-HBs typically measured?

a) Immediately after vaccination.
b) Several months after vaccination.
c) Several years after vaccination.
d) It is not measured after vaccination.

Answer 24

b) Several months after vaccination.

Question 25

What factor is linked to higher immunity according to the statement?

a) Duration of HBV vaccination.
b) Age at vaccination.
c) High lymphocyte levels.
d) Frequency of vaccination.

Answer 25

c) High lymphocyte levels.

Question 26

What is the key determinant of immunity in the context of Anti-HBs?

a) Maintaining a healthy body.
b) Frequency of booster shots.
c) Duration of HBV infection.
d) Vaccination dosage.

Answer 26

a) Maintaining a healthy body.

Question 27

Which organism was used to develop the HBV Vaccine in 1982?

a. Saccharomyces cerevisiae (common bakers’ yeast)
b. Escherichia coli (E. coli)
c. Streptococcus pneumoniae
d. Bacillus anthracis

Answer 27

a. Saccharomyces cerevisiae (common bakers’ yeast)

Question 28

WAg ka tamarin puta

Answer 28

Hsizhozhlsh