What is an example of a propagated epidemic?
In propagated epidemics, the disease is transmitted from person to person via, for example, a vector, respiratory droplets coughed or sneezed into the air, sexual contact, or some other direct or indirect method. Good examples are a malaria epidemic, or louse-borne relapsing fever or typhus.
What is a propagated outbreak?
A propagated outbreak results from transmission from one person to another. Usually, transmission is by direct person-to-person contact, as with syphilis.
What is the difference between common source epidemic and propagated epidemic?
common source outbreak: a type of epidemic outbreak where the affected individuals had an exposure to a common agent. propagated outbreak: a type of epidemic outbreak where the disease spreads person-to-person. Affected individuals may become independent reservoirs leading to further exposures.
What is the difference between an epidemic and an endemic?
Let’s start with basic definitions: AN EPIDEMIC is a disease that affects a large number of people within a community, population, or region. A PANDEMIC is an epidemic that’s spread over multiple countries or continents. ENDEMIC is something that belongs to a particular people or country.
Is Ebola a propagated epidemic?
Ebola is an example of a propagated epidemic. The graphs of new cases over time in West Africa are a combination of many mini outbreaks happening simultaneously.
What are the characteristics of a propagated epidemic?
Propagated epidemic curves usually have a series of successively larger peaks, which are one incubation period apart. The successive waves tend to involve more and more people, until the pool of susceptible people is exhausted or control measures are implemented.
What is common source epidemic?
A common-source outbreak occurs when a group of people get sick after being exposed to a virus, bacteria, toxin, or other infectious agent from the same source. For example, a common-source outbreak happens when a group of people get sick after eating the same contaminated food at the same restaurant on the same day.
Is Zika a pandemic?
Epidemic and pandemic are primarily different in terms of spread of contagious, infectious, or viral illness. An epidemic is limited to one specific region while a pandemic has a worldwide spread. Zika virus is an epidemic which was reported in Brazil in Feb., 2016.
What are the three main sources of an epidemic?
Epidemics of infectious disease are generally caused by several factors including a change in the ecology of the host population (e.g., increased stress or increase in the density of a vector species), a genetic change in the pathogen reservoir or the introduction of an emerging pathogen to a host population (by …