Public Health Final Flashcards
(210 cards)
What percent of deaths each year are associated with infectious diseases worldwide?
25%
What is an emerging infectious disease?
Outbreak of a previously unknown disease
OR
Outbreak of a known disease whose incidence in humans significantly increases or threatens to increase in the near future
What is a re-emerging infectious disease?
A disease that has reappeared after a significant decline in incidence
What was the World Health Organization’s take on infectious diseases in 2007?
“Infectious diseases are emerging at an unprecedented rate”
Since the 1970’s how many infectious diseases have been discovered?
> 40
(mostly viruses)
What 4 factors contribute to the rapid and global spread of infectious diseases?
-International Travel
-Living in densely populated areas
-Intimate human contact
-Close contact with wild animals
What does SARS-CoV-2 stand for?
Severe Acute Respiratory Syndrome- Coronavirus- 2
What kind of virus of COVID-19?
Single-strand enveloped RNA virus
What percent of COVID-19 deaths in the US were made up of people age > 65?
80%
What percent of COVID-19 deaths in the US were made up of people with comorbidities?
94%
What is the affect of race on those hospitalized for COVID-19?
Blacks, Native Americans, and Hispanics are hospitalized at greater rates
What is the main way that COVID-19 is transmitted?
Respiratory droplets
How soon may viral shedding of COVID-19 appear before symptoms?
1-2 days
What is the mean incubation period of COVID-19?
5-6 days (range 2-12 days)
In mild to moderate COVID-19 infections, how long does the patient remain infectious?
No longer than 10 days after symptom onset
How long do severely immunocompromised patients or those with severe-critical illness remain infectious with COVID-19?
No longer than 20 days after symptom onset
What occurs in Stage I (Early Infection) of COVID-19 disease progression?
Viral response phase
What medications should be used to treat Stage I (early infection) of COVID-19 disease progression?
Use antivirals
(does not make sense to use steroids since the inflammatory response phase has not started yet)
What clinical SIGNS and SYMPTOMS are present during Stage I (Early Infection) of COVID-19 Disease Progression?
Symptoms:
–Mild constitutional symptoms
–Fever
–Dry Cough
Signs:
–Lymphopenia
What occurs in Stage II (Pulmonary Phase) of COVID-19 disease progression?
Both viral response phase and host inflammatory response phase
What are the clinical SYMPTOMS and SIGNS of Stage II (Pulmonary Phase) of COVID-19 disease progression?
Symptoms:
–Shortness of breath without (IIa) and with hypoxia (IIb)
Signs:
–Abnormal chest imaging
–Transaminitis
–Low-normal procalcitonin
What happens in Stage III (Hyperinflammation Phase) of COVID-19 disease progression?
Host inflammatory response phase
What medications should be used to treat Stage III (Hyperinflammation Phase) of COVID-19 disease progression?
Give anti-inflammatories (steroids)
-Does not make sense to give antivirals since viral-response phase is over
What clinical SIGNS and SYMPTOMS may appear during Stage III (Hyperinflammation Phase) of COVID-19 disease progression?
Symptoms:
–ARDS (acute respiratory distress syndrome)
–SIRS/Shock
–Cardiac Failure
Signs:
–Elevated inflammatory markers
–Troponin, NT-proBNP elevation