<small><small>Key terms glossary
<small><small><strong>What is a public health emergency of international concern (PHEIC)?</strong>
An extraordinary event that is determined by WHO within a formal declaration to:
1) Constitute a public health risk to other countries
2) May require a coordinated international response
<strong>What is a public health emergency of national concern (PHENC)?</strong>
Any event that poses a risk of propagation of disease that may require a national response. Note that public health emergencies
are not exclusively related to infectious diseases (e.g. opioid crisis, road traffic accidents). This may vary by country.
<strong>What is an epidemic?</strong>
The rapid spread of disease to a large number in a given population, within a short period of time.
<strong>What is a pandemic?</strong>
An epidemic of infectious disease that has spread across a large region, multiple continents or worldwide.
<i><strong>Epidemics are distinguishable from pandemics in that epidemics may be restricted to one location. If they spread, depending on how far, they may become a pandemic.</strong></i>
<strong>What is a communicable disease?</strong>
A disease spread from one person to another through a variety of ways: contact (blood and fluids), breathing (an airborne virus) or bitten by an insect.
Some examples include measles, foodborne diseases, Syphilis, Zika, Hepatitis A-D, Lyme disease and HIV.
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