81. EMERGING VIRUSES Flashcards
- Define: Emerging Viruses.
- these are viruses that suddenly become apparent
EXAMPLES:
- flu pandemic of 2009
- Covid
- What causes Flu epidemics?
- they are caused by new strains of the influenza virus
- people have little immunity to this
- What has caused the spread of new viral diseases?
- the spread of viruses from animals to humans
- they can cause pandemics
THE VIRAL STRAINS:
- will jump from one species to another
- the highly pathogenic animal virus strain will combine
with the human virus strain
- this will result in a highly pathogenic human strain
- human beings will not have the immunity to protect
themselves against this new strain
- What are pandemics?
- they are global epidemics
- What was the Swine Flu?
- this is the name given to the 2009 Swine Flu
- it was likely passed from pigs to humans
- What happened globally in 1918-1920?
- the 1918 Flu Pandemic
- this was the Spanish Flu
IT KILLED:
- 20 to 100 million people
IT HAD A CASE FATALITY OF:
- 2%
IT WAS CAUSED BY:
- the H1N1 virus
IT HAD A PANDEMIC SEVERITY INDEX OF:
- 5
- What happened globally in 2009-2010?
- the 2009 Flu Pandemic
IT KILLED:
- 18 000 people
IT HAD A CASE FATALITY OF:
- 0.03%
IT WAS CAUSED BY:
- the H1N1 virus
IT HAD A PANDEMIC SEVERITY INDEX OF:
- it was too small to be significant
- this was a result of the Flu Vaccine being developed
- What does SARS-CoV-2 stand for?
- Severe Acute Respiratory Syndrome Coronavirus 2
- it is the 7th Coronavirus that has infected people
- What does the SARS-CoV-2 virus strain cause?
- it causes a respiratory illness
- this is known as CoronaVirus Disease 2019
- COVID-19
- What kind of Virus is the SARS-CoV-2 strain?
- it is an enveloped virus
- it is a Positive Sense Virus
- it runs in the 5’-3’ Orientation
- it is a single stranded RNA virus
- What do viruses such as SARS-CoV (2003),
MERS (2012), SARS-CoV-2 (2019) result in?
- they cause serious respiratory disease
ANOTHER 4 CORONAVIRUS STRAINS CAUSE:
- common cold symptoms
- Where did Covid-19 originate?
- it originated in China
- in the Hubei Province
- this happened in December 2019
- What is the origin of Covid-19?
- it is a Zoonotic disease
- it was passed from bats to humans
- this happened through the use of an intermediate host
- How does Covid-19 enter the human body?
- it binds to a receptor
- this is called Angiotensin
- it is found in human cells
COVID-19:
- then converts the enzyme 2 (ACE-2)
- What is the current death count due to Covid-19?
- more than 6.87 million deaths