CH 13 Diseases Flashcards
COVID 19
- causative agent
- appearance
- naked or enveloped
- segmented or not
- RNA virus or DNA
- SARS-CoV-2
- crown-like due to spiked
- enveloped
- non segmented
- single stranded RNA
Where and when was COVID 19 first discovered
Wuhan, China
December 2019
COVID 19
- most common symptoms (3)
- less common symptoms (7)
- fever
- dry cough
- tiredness
- aches and pains
- sore throat
- diarrhea
- conjunctivitis
- headache
- loss of taste/smell
- rashes
DENGUE
- cause
- naked or enveloped
- # of serotypes
- RNA virus or DNA
- Aedes aegypti mosquito
- enveloped
- 5 serotypes
- ssRNA
Special feature in Dengue
Antibody-dependent enhancement (ADE) - phenomenon that occurs when antibodies from a previous dengue infection prevent the body from neutralizing a subsequent infection, leading to a higher risk of severe dengue
DENGUE
3 most common symptoms
and how long they typically last
- nausea & vomiting
- rashes
- aches and eye & bone pains
lasts 2-7 days
Hepatitis B
- causative agent
- mode of transmission
- 5 common symptoms
- Hepatitis B virus
- body fluids
- fatigue, poor appetite, stomach pain, nausea, and jaundice (skin and eyes turn yellow)
What internal organ does the Hepatitis B virus affect?
Liver
Is Hepatitis B preventable?
Yes by vaccine
HIV
- acronym
- mode of transmission
- appearance
- RNA virus or DNA
- naked or enveloped
- attacks what specific type of cell in the human body?
- Human Immunodeficiency Virus
- certain body fluids (sexual intercourse + blood)
- cone-shaped corse
- 2 copies of ssRNA
- ENVELOPED
- attacks HELPER T CELLS
HIV may lead to what disease?
AIDS
AIDS
- acronym
- what kind of phase of HIV infection
- life-threatening or not?
- Acquired Immunodeficiency Syndrome
- most severe phase at STAGE 3
- life - threatening = untreated ( max 3 years to live)
When do people receive an AIDS diagnosis
when their CD4 cell count drops below 200 cells/mm
Virus vs Viroid
VIROID - complete virus particle specifically for PLANTS
How many viroid types are known?
30
