Mod 4: BBV, Hep, AIDS and emerging viruses

Question 1

BBV

Answer 1

blood borne viruses HBV HCV HIV

Question 2

hepatitis

Answer 2

inflammation of liver

symptoms: jaundice, dark pee, light poop

Question 3

Hep A

Answer 3

not a bbv, but has similar symptoms so must test to determine which virus is causing symptoms

Question 4

previously called (hep a)

Answer 4

infectious hep (but all viral hepatitis infectious) short incubation hep (but incubation varies for all types)

Question 5

causative agent (hep a)

Answer 5

HAV- contaminated food or H2O ingested by new host replicates in mouth, intestine and liver via bile duct

Question 6

HAV infection (hep a)

Answer 6

most hosts get typical hep symptoms usually no permanent liver damage; don’t usually die

Question 7

diagnosis (hep a)

Answer 7

test blood for anti-HAV antibodies

Question 8

transmission (hep a)

Answer 8

via food or h2o contaminated with feces or saliva

Question 9

Hep B

Answer 9

bbv

Question 10

previously called (hep b)

Answer 10

serum hep have long incubation hep

Question 11

entry into host (hep b)

Answer 11

blood-replicates in liver- hbv in blood etc

Question 12

HBV infection

Answer 12

most hosts asymptomatic

Question 13

chronic carriers (hep b)

Answer 13

5-10 %

Question 14

transmission (hep b)

Answer 14

via blood

Question 15

diagnosis (hep b)

Answer 15

test blood for serological markers

Question 16

Hep C

Answer 16

bbv

Question 17

transmission (hep c)

Answer 17

via blood

Question 18

chronic carriers (hep c)

Answer 18

common; high risk of cirrhosis or liver cancer

Question 19

causative agent

Answer 19

HV enveloped

Question 20

viral relication of HIV/AIDS

Answer 20

attachment to susceptible host cell
fusion to host cell
penetration
RNA-> DNA
incorporation of viral DNA into host cell DNA

Question 21

Effect of HIV on host cells

Answer 21

kills helper t cells when number is significantly reduced, get clinical symptoms of AIDS