pandemics Flashcards

1
Q

what is an epidemic

A

rapid spread of disease within a population in a short period of time

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2
Q

what is a pandemic

A

epidemic that has spread across a large region or worldwide

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3
Q

why did some survive pandemic

A

Survivors carried mutations that boosted their immune systems

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4
Q

what were the costs of being immune to pandemic viruses

A

associated with high risk of autoimmune diseases today: Crohn’s disease and rheumatoid arthritis

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5
Q

what was the cause of covid

A

Caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)

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6
Q

where was the first known case of covid

A

Wuhan China in Dec. 2019

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7
Q

initially how many did each infected person with covid infect

A

2.4-3.4 others

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8
Q

how many people spread covid with no symptoms

A

1/3

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9
Q

what % of people with covid had mild to moderate symptoms

A

81%
up to mild pneumonia

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10
Q

what % of people with covid had severe symptoms

A

14%
shortness of breath and hypoxia

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11
Q

what % of people with covid were critical

A

5%
respiratory failure requiring ICU admission; 30-46% die

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12
Q

when were people with covid symptomatic

A

on day 4-5

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13
Q

when were people with covid infectious

A

on days 1-4

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14
Q

what was the omicron variant

A

less severe disease than Delta but more contagious

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15
Q

what was special about the omicron variant

A

evades antibodies from vaccinations & prior infection

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16
Q

how to bypass misinformation

A

find reliable sources of information
learn to read and interpret data

17
Q

how many death did the covid vaccine prevent

A

14-20 million
90,000 - 150,000 in canada

18
Q

what % are adults less likely to be infected with covid after getting the mRNA vaccine

19
Q

what % are adults less likely to be hospitalized with covid

20
Q

what are vaccines not as effective at fighting

21
Q

what % of canadians suffer from long covid

22
Q

is there lifetime immunity with vaccines

23
Q

what effective measures should we take against covid

A

stay home and isolate
improving indoor ventilation
school closures initially but not now
social distancing initially

24
Q

what is the difference between misinformation and disinformation

A

False ormisleading and inadvertently shared (misinformation) or deliberately created orshared (disinformation)

25
how many more canadian would have been vaccinated if it weren't for misinformation
2.3 mill
26
how many fewer cases would there have been if it weren't for misinformation
198,000
27
how many fewer hospitalizations would there have been if it weren't for misinformation
13,000
28
what does the dna sequence on chromosome 3 do to your susceptibility to covid
60% increased hospitalization by covid
29
what do the same genes that make you more susceptible to covid provide protection against
HIV and smallpox
30
what % of people get covid but are asymptomatic
20%
31
why do some people not get symptoms and what does it tell them about their immune system
a single mutation allows T cells to recognize covid virus even if never encountering it covid is similar to the common cold virus so asymptomatic people don't have a refined immune system to identify the difference between covid and a cold