viral diseases Flashcards
1
Q
what is a virus?
A
-invade cells and destroy them, reproduce inside host cell
2
Q
name 2 viral diseases
A
- measles, HIV
3
Q
what are symptoms of measles?
A
- fever, skin rash, can be fatal
-infertility as adults if not vax as a kid
4
Q
how is measles spread?
A
- droplets in coughs and sneezes
5
Q
how Is measles prevented?
A
- isolation and vaccines
6
Q
what are symptoms of HIV?
A
- flu-like symptoms
- attacks body immune cells
7
Q
how is HIV spread?
A
- sex
-exchange of bodily fluids i.e sharing needles
8
Q
what is late stage HIV?
A
- AIDs
-when body’s cells become so badly damaged, no longer fight off infection or cancers, fatal
9
Q
what are treatment of HIV?
A
- antiretroviral drugs, do not go on to develop aids, do not cure HIV, take for rest of life
- stops virus multiplying inside of patient so virus does not damage patient’s immune system
10
Q
how do virus cause disease?
A
- virus attaches to specific host cell
- genetic material from virus injected into host cell
- viral genes can cause host cell to make new viruses
- host cell splits open releasing new virus
