Epidemic diseases have been becoming an extreme warning on the global scale and the situation may even become worse in the future this essay characterizes some major factors contributing to epidemic outbreaks and spread as well as devastating consequences of epidemic diseases. Learn about the biggest outbreaks in united states history and how we’ve overcome them newsletter yellow fever causes yellowing of the skin, fever, and bloody vomiting five thousand. An epidemic is when a disease spreads quickly through a population, infecting a large percentage disease is spread by infection when a person with a disease passes it to a new person, they.
Emerging and re-emerging epidemics have been posing an extreme threat to global health security an epidemic is defined in the oxford advanced learner's dictionary as a large number of cases of a particular disease happening at the same time in a particular community (epidemic, nd, para 1. An epidemic (from greek ἐπί epi upon or above and δῆμος demos people) is the rapid spread of infectious disease to a large number of people in a given population within a short period of time, usually two weeks or less.
What are the causes of epidemic i can tell you that i think that the causes of cholera epidemic, is all from things that come into our country and many other countrys that may (or may not) be contaminated wi th this rechad desieas. Yellow fever causes yellowing of the skin, fever, and bloody vomiting five thousand people died, and 17,000 fled the city end: the vaccine was developed and then licensed in 1953. I can tell you that i think that the causes of cholera epidemic, is all from things that come into our country and many other countrys that may (or may not) be contaminated with this rechad desieas. The exchange of genetic material between two closely related strains of the influenza a virus may have caused the 1947 and 1951 human flu epidemics, according to biologists the findings could.
As medicine advances, there are fewer infectious disease outbreaks, or epidemics an epidemic is when an infectious disease spreads within a community or area during a specific time period. Epidemics of infectious disease are generally caused by several factors including a change in the ecology of the host population (eg 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 movement of pathogen or host. Epidemics relating to the spread of infectious diseases are caused by the lack of knowledge on specific ways a germ is transmitted and the ability for treatments to be effective in controlling the spread of the disease.
Epidemics, pandemics, and outbreaks when is a disease outbreak a concern and what is the difference between an epidemic and a pandemic learn the basics about the spread of serious diseases and.
An epidemic of non-existent disease in that area is unlike to be seen after such disasters iii) ecological changes during natural disaster like floods and cyclones, ecological changes occur it causes increase in the breeding sites for mosquitoes this results in an increase in the cases of malaria. The epidemiologic triangle or triad is a model of three main factors contributing to epidemic outbreaks and spread, including agent, host and environment. Cause of flu epidemics uncovered date: march 7, 2008 source: penn state summary: the exchange of genetic material between two closely related strains of the influenza a virus may have caused the.
Disease and epidemics occur as a result of the interaction of three factors, agent, host, and environment agents cause the disease, hosts are susceptible to it, and environmental conditions permit host exposure to the agent.
Disease outbreaks of unknown etiology read more on disease outbreaks of unknown etiology occasionally, an outbreak is seen in a population for which the cause is unclear. Spread to cause epidemics in 29 other countries around the world quickly dubbed sars, for severe acute respiratory syndrome, the deadly virus caused worldwide alarm and a media frenzy as the world health organization issued a global alert.