GI Viruses

Question 1

Name the virus likely to cause:

adult with fever, flu like symp, rash that clears up after 5 days

Answer 1

enterovirus

Question 2

Name the virus likely to cause:

after attending a wedding, that night and next morning many guests developed vomiting, watery diarrhea

Answer 2

norovirus
incubation in only 6-10 hrs and comes out BOTH ends…
*salad, wedding cake frosting, or shell fish likely cuprit

Question 3

Name the virus likely to cause:

asymptomatic gastroenteritis

Answer 3

enterovirus

Question 4

Name the virus likely to cause:

menigits that recovers 2-3 days later

Answer 4

poliovirus, coxsackie (B), echovirus

Question 5

Name the virus likely to cause:

abrupt onset pleuritic chest pain and fever

Answer 5

group B coxsackie

= pleurodynia

Question 6

Name the virus likely to cause:

enathema (ulcerative lesions in mouth) and vesicular lesions on hands and feet

Answer 6

coxsackie 16

Question 7

Name the virus likely to cause:

myocarditis

Answer 7

group B coxsackie

Question 8

Name the virus likely to cause:

acute hemorrhagic conjunctivitis

Answer 8

coxsackie A24 and echovirus 70

Question 9

Name the virus likely to cause:

severe diarrheal disease in an infant

Answer 9

rotavrius

Question 10

Pathogenesis of diarrhea in noro and rota viruses

Answer 10

impairment of the Na-glc transporter. NOT stimulation of AC or cAMP as in V. cholera

Question 11

Vaccines for GI viruses

Answer 11

RoraTeq: pentavalent, live attenuated
Rotariz: monovalent, live attenuated

Question 12

enteroviruses are different from rhino viruses in that…

Answer 12

they are acid stable and have less stringent growth requirements (they can grow at 37C)

Question 13

segmented RNA virus

Answer 13

rotavirus

Question 14

double stranded RNA virus

Answer 14

rotavirus

Question 15

incubation time for:
rotavirus
norovirus
enteroviruses

Answer 15

rota: 1-4 days
noro: 6-10 hrs
entero: 7-10 days