Hepatitis B Flashcards
“Long incubation hepatitis” = ?
Hepatitis B
What hepatitis is an endemic in many developing countries?
Hepatitis B
What are some ways in which Hepatitis B can spread?
Mother-fetus, sex, blood
What is the virus that led to the development of universal precautions from ADA and CDC for dentists in the 70s?
Hepatitis B
Is Hepatitis B an RNA or a DNA virus?
DNA virus
What virus has been found during genome sequencing of 11,000 year old human remains?
Hepatitis B
Acute symptoms of Hepatitis B are the same as Hepatitis A except it also includes:
Joint pain
Discuss the infection of Hepatitis B.
- Infection can be acute or chronic
- If acute, there is 90% resolution in adults
- If chronic, carriers can spread infection even if no symptoms are present. There is chronic persistent hepatitis.
Incubation period for HBV is on average:
90 days (up to 3 months)
__% of all people worldwide will be infected with HBV at some point in their lives
25
Infection of infants and children increases the risk of chronic infection to:
90% and 25-50% respectively
What symptom is unique to HBV and not seen in HAV?
joint pain
Chronic HBV infection can lead to:
- cirrhosis and liver cancer (hepatocellular carcinoma)
- also leads to chronic inflammatory responses (which ends up damaging our DNA in the liver cells)
How do you diagnose HBV?
ALT in blood (liver enzyme)
What determines whether you get acute or chronic HBV infection?
T cell response
