CSIM1.72 Respiratory Viruses Flashcards

1
Q

List 5 viruses responsible for respiratory tract infections

A
Rhinovirus
Adenovirus
Coronavirus
Influenza virus
Respiratory syncitial virus
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2
Q

What does the rhinovirus cause?

A

The common cold

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3
Q

Route of transmission of rhinovirus?

A

Repiratory route, hand to mouth and contaminated surface

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4
Q

Symptoms of rhinovirus infection

A
Nasal congestion
Sneezing
Cough
Sore throat
Rarely fever
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5
Q

Symptoms of adenovirus infection?

A
Cold-like symptoms
Conjunctivitis
Tonsillitis
Bronchiolitis
Pneumonia
Diarrhea
Fever
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6
Q

Describe antigenic shift and drift

A

Antigenic drift is caused by small changes in genes, mutations, these results in epidemics about every 4 years

Antigenic shifts occur when more than one strains of influenza viruses combine genomes, causing a large change in genes which can cause pandemics, occer every few decades.

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7
Q

Difference between influenza A B and C

A

A is the most common/severe strain

B and C have less virulence.

A has H and N strains

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8
Q

How does tamiflu work?

A

It is a neuraminidase inhibitor, it competively inhibits the protein which allows the viral particles to be released.

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9
Q

Symptoms of respiratory syncitial virus

A

Cough sneezing fever wheezing

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10
Q

Epidemiology of RSV

A

Peaks in winter, common under 1 year old.

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11
Q

Treatment of RSV

A

Symptomatic, oxygen and mucus drainage.

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