Viral And Chlamydial Infections Flashcards
(22 cards)
What is Acute Respiratory Disease
The cold
What kind of infection:
“Benign, transitory and self-limited”
Cold
What agents cause ARD/cold
Adenoviruses and unknown viruses 30-40%*****
Rhinoviruses
Coronaviruses
Are colds caused by cold temperatures
Data suggests there is no DIRECT link, but we don’t know for sure
How are rhinoviruses spread?
Aerosols
Fomites
Direct contact
EVERYTHING
What is the best way to control rhinovirus
Washing hands
We have a cure for the common cold! What is it and why don’t we use it?
Picovir
Only works against Rhinoviruses
Not approved because of unknown side effects and colds are “benign, transitory and self limited”
What do we think causes acute flaccid myelitis
Viral etiology suspected, but not proven
What is the worst influenza species
A
How do we deterring the antigenic subtype of each strain of flu
Envelope proteins
H: hemagglutinin
N: Neuraminidase
If you diagnose a patient with the flu, and they call back and say they had a relapse, what do you need to ask them?
If the fever went away and then came back.
Indicates they have a secondary pneumonia which can kill them
Which 3 bacteria tend to cause secondary bacterial pneumonia after a bout of influenza
Strep pneumo
Staph aureus
Haemophilus influenza type B (Hib)
Which has a higher risk of causeing Guillain Barre syndrome: the flu shot or getting the flu
Getting the flu 10 fold higher risk
If you get a negative rapid antigen test when trying to diagnose the flu, does it mean they don’t have the flu?
No, RATs sometimes fail.
False negatives are common in early course of disease
All flu shots are now ______
Quadrivalent
What is the intradermal flu shot?
Flu shot with an itty bitty needle and the antigen is injected under the skin. Increased pain at injection site later.
What about type A influenzas allows them to create novel forms that cause pandemics
Segmented genome
What species do Type A influenza viruses like to target?
BROAD host range, especially the animals we like to eat (chicken and pigs )
Can we predict flu pandemics
No
Which bacteria is considered biochemically restricted and an energy parasite?
Chlamydia. Removes ATP from the host
How do neonates get chlamydia trachomatis
Infected mother. Aspirates it during birth=pneumonia
How soon after birth will a baby start showing pneumonia if he aspirated chlamydia trachomatic from his infected mom
~3 weeks
