Viruses Flashcards
T/F: Viruses have a protein coat, are larger than bac, and require a host or a landing gear
F: v is smaller than a bac
Can virus reproduce on food?
no, thats only a host
Bacteria double when they reproduce but virus reproduce _______ of new viruses
hundreds
What can virus do to the host cell? how does body attempt to destroy this?
DNA to morph into a different strain
fever
At what temperature do viruses denature?
138
How does pH affect a virus?
low pH- like chlorine and ascorbic acid
What are some human to human viruses?
HIV
common cold
“mono”
What is the number one virus/ how is it transmitted? Is it a FBI?
common cold
saliva, coughing, sneezing
hand to eye
no
How many cases of the common cold occur each year? how many go unreported?
500 mil
1.5 colds per person per yr
28%
How is HIV transmitted? How can you prevent HIV?
body fluids, blood
don’t share needles, unprotected sex
HIV workers are protected under the ___ and cannot be ________ against.
ada
discriminated
Which virus is aka the kissing virus?
Mononucleosis
epstein barr virus
Where is Epstein Barr a problem? Who is exposed and has virtually no symptoms? when is it problematic?
clean societies
children
later in life
What are some symptoms of Epstein Barr? when do they appear?
fever, enlarged spleen lethargic/ low energy swollen lymph nodes severe sore throats 3- 14 days
How is EBS spread?
kissing- saliva
sharing instruments, bev, food, lip balm
What are two mosquito born viruses?
west nile virus
zika virus
When was west nile virus discovered? how does it multiple and spread?
NYC 1999
birds/ mosquitos
T/F: most ppl (80%) fight off and experience no symptoms
T
What is zika virus also linked too?
guillian barre syndrome
How do you prevent all mosquito born virus?
avoid exposure to mosquitos
wear long sleeves
check for standing water
What are some viruses from other critters?
swine flu
avian flu
ebola (fruit bats)
What are symptoms of swine flu?
fever runny nose sore throat diarrhea nausea vomit lethargy
How is swine flu transmitted?
contact w/ pigs or their food
human to human
How is H5N1 (Avian flu) species transmitted currently?
bird to bird
bird to human
