Viruses

Question 1

Measles- presentation

Answer 1

Cough
Coryza (rhinorrhea)
Conjunctivitis

+ Koplik spots

Question 2

Measles- virus

Answer 2

Paramyxovirus

Question 3

Roseaola- virus

Answer 3

HHV-6

Question 4

Roseaola- presentation

Answer 4

High fever for a few days, followed by morbilliform rash (measles-like). Lacks the 3 C’s.

Question 5

Respiratory syncytial virus (RSV)- family and morphology

Answer 5

Paramyxoviridae; negative sense ssRNA, nonsegmental, helical, envoloped

Question 6

Adenovirus- morphology

Answer 6

dsDNA, naked, icosahedral

Question 7

Influenza- morphology

Answer 7

negative sense ssRNA, 8 segments, helical, enveloped

Question 8

Coronavirus- morphology

Answer 8

positive sense ssRNA, helical, enveloped

Question 9

Picornavirus- morphology

Answer 9

positive sense ssRNA, naked, icosahedral

Question 10

Calicivirus- morphology

Answer 10

positive sense ssRNA, naked, icosahedral

Question 11

Hepatitis A- family and morphology

Answer 11

Picornavirus; positive sense ssRNA, capsid polypeptides V1-V4, icosahedral

Question 12

Hepatitis B- family and morphology

Answer 12

Hepadnavirus; circular partially-dsDNA, double-shelled virion, enveloped, icosahedral/spherical core

Question 13

Hepatitis C- family and morphology

Answer 13

Flaviviridae (genus hepacivirus); positive sense ssRNA, linear, enveloped

Question 14

Hepatitis D- family and morphology

Answer 14

Like viroids/plant satellite viruses (Deltavirus); negative-sense ssRNA, circular, HBsAg coat

Question 15

Hepatitis E- family and morphology

Answer 15

Hepeviridae; positive sense ssRNA, linear, non-enveloped, icosahedral

Question 16

Hepatits B- geographical distribution of genotypes

Answer 16

Genotypes A and D in US and Europe; genotypes B and C in Asia