Two birds, one stone: Green roof gardening in the city

I'm a New York native, born and raised in Ozone Park, Queens. My family has a decent amount of space in our small backyard to grow fruits and vegetables. Tomatoes, chili peppers, squash and cucumbers are just a few items ...

Tree loss from bark-beetle infestation impacts elk habitat

Although elk typically adapt to forest disturbances such as forest fires and logging, a new Journal of Wildlife Management study found that during the summer, elk avoided areas with extensive tree mortality that has occurred ...

Finding the energy for going viral

The question of how much energy a virus needs to replicate in its host translates into how likely a single infection is to become an epidemic. Writing in the International Journal of Exergy, Sevgi Eylül Ferahcan, Ayşe Selcen ...

Can social interactions affect spread of disease?

Most real-world systems, such as biological, social, and economic schemes evolve constantly. The dynamics of such systems are characterized by significantly enhanced activity levels over short periods of time (or "bursts") ...

Bacterial 'gene swapping' sparks disease outbreaks

A new study by scientists at the University of Liverpool documents, for the first time, how the ability of bacteria to swap genetic material with each other can directly affect the emergence and spread of globally important ...

page 1 from 10

Epidemic

In epidemiology, an epidemic (from Greek epi- upon + demos people) occurs when new cases of a certain disease, in a given human population, and during a given period, substantially exceed what is "expected," based on recent experience (the number of new cases in the population during a specified period of time is called the "incidence rate"). (An epizootic is the analogous circumstance within an animal population.) In recent usages, the disease is not required to be communicable; examples include cancer or heart disease.

This text uses material from Wikipedia, licensed under CC BY-SA