Diseases, Conditions, Syndromes

Mapping dengue hot spots pinpoints risk for Zika and chikungunya

Data from nine cities in Mexico confirms that identifying dengue fever "hot spots" can provide a predictive map for future outbreaks of Zika and chikungunya. All three of these viral diseases are spread by the Aedes aegypti ...

Vaccination

Federal, state moves begin to mandate COVID vaccines for workers

(HealthDay)—In a sign that the United States has reached a "tipping point" in its campaign to vaccinate Americans, California and New York City announced vaccine or testing mandates for their employees on Monday while the ...

Diseases, Conditions, Syndromes

NYC to require vaccines or weekly testing for city workers

New York City will require all of its municipal workers—including teachers and police officers—to get coronavirus vaccines by mid-September or face weekly COVID-19 testing, Mayor Bill de Blasio announced Monday.

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City

A city is a relatively large and permanent settlement, particularly a large urban settlement. Although there are no agreed on technical definitions distinguishing a city from a town within general English language meanings, many cities have a particular administrative, legal, or historical status based on local law — for example an article of incorporation approved by the local cognizant (state) legislature separates towns from city government forms, rights, duties and privileges in Massachusetts — similar distinctions are made across the world, particularly in former colonies of the United Kingdom. Historically, in Europe, a city was understood to be an urban settlement with a cathedral; in later usages, especially in the United Kingdom and parts of Commonwealth of Nations, a city was a settlement with a royal charter.

Cities generally have advanced systems for sanitation, utilities, land usage, housing, and transportation and more. This proximity greatly facilitates interaction between people and businesses, benefiting both parties in the process.

A big city, or metropolis, may have suburbs and regions. Such cities are usually associated with metropolitan areas and urban sprawl, creating large numbers of business commuters. Once a city sprawls far enough to reach another city, this region can be deemed a conurbation or megalopolis.

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