write about pandemic disease
Answers
Explanation:
pandemic is defined as “an epidemic occurring worldwide, or over a very wide area, crossing international boundaries and usually affecting a large number of people”. The classical definition includes nothing about population immunity, virology or disease severity.
By this definition, pandemics can be said to occur annually in each of the temperate southern and northern hemispheres, given that seasonal epidemics cross international boundaries and affect a large number of people. However, seasonal epidemics are not considered pandemics.
Answer:
+++(+Endemic - describes a disease that is present permanently in a region or population
+++++Epidemic - is an outbreak that affects many people at one time and can spread through one or several communities
+++++Pandemic - is the term used to describe an epidemic when the spread is global.
A pandemic is derived from Greek pan meaning all and demos meaning people and is the term used to describe the rapid spread of a transmissible infectious/communicable disease over several continents or worldwide. Once an epidemic becomes global and affects a large percent of the population it becomes known as a pandemic. The terms pandemic and epidemic are used to describe the rate and distance of the spread of the disease and not the severity of the disease. Significant features of a pandemic are listed below:
Affects a wider geographical area, often global
Infects a very large number of people
Often caused by a new virus or a new strain of a virus that has been dormant for many years.
Spreads quickly in humans as there is little to no existing immunity
Can cause a high number of deaths
Because of the need to control the spread of the disease, there is often social disruption, unrest and economic loss