Epidemic Pandemic And Endemic Definition

En in demos endemic.

Epidemic pandemic and endemic definition. A pandemic is an epidemic that s spread over multiple countries or continents. When a disease exists all the time in a specific region or among. Epidemics occur when an agent and susceptible hosts are present in adequate numbers and the agent can be effectively conveyed from a source to the susceptible hosts. The difference between an epidemic and a pandemic isn t the severity of the disease but the degree to which the disease has spread.

Think of an epidemic as a forest fire that usually starts from a small area and then spreads rapidly through the forest engulfing all the trees. For example influenza virus commonly occurs within the asian continent but in recent years it has spread to most parts of the world. If it s not quickly controlled an outbreak can become an epidemic. Compared to an epidemic disease a pandemic disease is an epidemic that has spread over a large area that is it s prevalent throughout an entire country continent or the whole world pandemic is also used as a noun meaning a pandemic disease.

This outbreak is usually the start of an epidemic. An epidemic defines the occurrences of a disease in a larger population as compared to an endemic and these diseases have the ability to spread to a larger population if not contained. Epidemic refers to a sudden increase in the number of cases of a disease above what is normally expected. When an endemic disease a disease that is always present in a region infects a greater number of people it results in an outbreak.

An epidemic is defined as an outbreak of disease that spreads quickly and affects many individuals at the same time a pandemic is a type of epidemic one with greater range and coverage an outbreak of a disease that occurs over a wide geographic area and affects an exceptionally high proportion of the population. More specifically an epidemic may result from. Pandemic refers to an epidemic that has spread over several countries or continents usually affecting a large number of people. Endemic refers to the persistent or common presence of a disease both infectious or non infectious or an agent of infection in a specific region or population.

Endemic is usually an adjective unlike pandemic and epidemic above. An epidemic is a widespread occurrence of an infectious disease in a community at a particular time. Endemic is something that belongs to a particular people or country. Annual influenza epidemics follow a winter seasonal pattern in the united states with typical activity peaking during late december to early february.

An outbreak is a greater than anticipated increase in the number of endemic cases. For example chickenpox varicella is a common occurrence in many countries around the world for school children. It can also be a single case in a new area. The word epidemic is derived from the greek word epidemia in which epi means upon and demos means people.