Fenger Flashcards

(51 cards)

1
Q

What is usually not involved with parainfluenza virus and influenza virus

A

viremia

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2
Q

how long is incubation period for respiratory viruses

A

short

1-3 days

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3
Q

What if the virus causes a viremia, how long is incubation period

A

longer

weeks to weeks

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4
Q

What is the genomic make up for paramyxovirdiae

A

SS RNA
negative polarity
nonsegmeted

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5
Q

What structures does paramyxovirdiae have

A

Helical nucleocapsid
RNA dependent RNA polymerase
envelope
6 structural proteins

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6
Q

Name some glycoprotiens in paramyxovirdiae

A

Hemagglutinin (H) and Neruminadase (N)

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7
Q

What are the 3 primary genera for paramyxovirdiae

A
  1. paramyxovirus
  2. morbillivirus
  3. pneumovirus
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8
Q

How do the genera of paramyxovirdiae differe

A

differe in envelope glycoproteins

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9
Q

function of H glycoprotein

A

attachment of virus to receptors on cell surface

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10
Q

function of F glycoprotein

A

mediates fusion between viral envelope and outer cell membrane

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11
Q

what must happen to F glycoprotein in order for it to work

A
  • proteolytically cleaved on viral envelope surface
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12
Q

F glycoprotein is similar to what

A

H glycoprotein of influenza virus

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13
Q

Where does Paramyxoviridae virus repliacate

A

cytoplasm

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14
Q

Paramyxovirus genus: type 1 symptoms

A
croup 
acute respiratory disease
pneumonitis of newborns 
colds in adults
coryza
pharyngitis
bronchitis
children - bronchiolitis
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15
Q

Paramyxovirus genus: type 2 symptoms

A

coup

laryngotracheobronchitis

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16
Q

Paramyxovirus genus: type 3 and 4 symptoms

A

acute respiratory disease
bronchitis
pneumonia

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17
Q

Paramyxovirus genus has what disease

A

measles ( roseola)

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18
Q

what is under pneumovirus genus

A

RSV

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19
Q

what is the virulence factor for RSV

A

F glycoprotein

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20
Q

clinical symptoms of RSV

A

bronchiolitis and pneumonia in infants

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21
Q

what is the immune defense for RSV? what is not a good immune response

A

IgA

- maternal antibody IgG does not protect, may actually enhance severity

22
Q

What do you give to babies at risk for RSV

A
  • Palivizumab

- IV prophylaxis

23
Q

which picornaviridae virus is acid stable and which ones are not

A
  • enterovrises: acid stable

- rhinovirus is not

24
Q

Enterovirus is commonly seen in who

A

young individuals

immunocompromised

25
How are HSV-1 gingtivostomatitis lesions seen
throughout oral cavity
26
symptoms of Coxsackievirus group A
- hand, foot, mouth - cold virus - aseptic meningitis
27
how many types of Coxsackie group B are there
6
28
As in the case with other coxsackie viruses, the serotypes that cause coxsackie group B begin with?
respiratory infection
29
clinical manifestation for Coxsackie group B
COLDS | summer grippe
30
What are clinical features of Echovirus
- summer aseptic meningitis | - febrile illnes with rash ( young people)
31
type D68 of new enteroviruses causes what? who is it seen in
respiratory illness | - more severe in children and asthmatics
32
what is rhinovirus hard to distinguish from
H1N1
33
what is the viral structure of Coronaviridae
- helical nucleocapsid | - positivve RNA
34
Coronaviridae: coronavirus most common assoicated
SARS - group 2
35
clinical feature of coronavirus? when does this usually occur
infectious bronchitis in adults winter or early spring - cold symptoms
36
symptoms of SARS
high fever cough SOB
37
what does SARS bind
1. cell receptors | 2. ACE 2 on epithelial cells
38
What types of adenovirus is associated with military recruits
4,7,21 | 8
39
Adenovirus has what 2 components
240 hexons | 12 pentons
40
what do hexons connect?
contact with 6 neighboring capsomers | - each has small hole in the center
41
Location of pentons? what do pentons connect
- vertices of icosahedron - contact with 5 neighboring capsomers - each has small hole in the center
42
What does penton consist of
base fiber knob at distal end of fiber
43
where does adenovirus replicate
host cell nucleus
44
adenovirus produces what type of infection in tonsil, adenoids and other lymph organs in children
latent
45
for adenovirus replication what early proteins are enzymes involved with DNA synthesis
thymidine kinase | DNA polymerase
46
where does replication and viral assembly occur for adenovirus
nucleus | -grapelike cluster of virus particles
47
What are the two important adenovirus types
4 and 7
48
adenoviurs Type 7 and 3 have what clinical feature
pneumonia in children
49
Adenoviurs types 8,7,19 have what clinical features
keratoconjunctivitis | shipyard conjunctivitis
50
what type of vaccine is used for what serotype for adenovirus
live oral vaccine for type 4 and 7
51
how does an oral, live-attenuated vaccine prevent respiratory disease
- increase IgG | - IgG indirectly impacts respiratory