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covid-19 Oklahoma |
but whose origin is still unknown. Its different types cause different illnesses,
from a cold to a severe respiratory syndrome (a severe form of pneumonia).
most people get a coronavirus at some point in their lives, usually during childhood.
Although they are more frequent in autumn or winter, they can be purchased at any
time of the year.
to a crown or halo. It is a type of virus present in both humans and animals.
Three major epidemic outbreaks caused by coronaviruses have been described
in recent years:
(SARS, also known as SARS and SARS) began in China in November 2002,
affecting more than 8,000 people in 37 countries and causing more than 700 deaths.
SARS-Cov mortality has been estimated at approximately 10%.
was first detected in 2012 in Saudi Arabia. As of October 2019, more than 2,400
cases of infection have been reported in different countries, with more than 800 deaths.
The case fatality is therefore 35%.
in the city of Wuhan (China). Since then the drip of new infected by the SARS-CoV-2 virus
(initially called 2019nCoV), which causes COVID-19, has been continuous and its
transmission from person to person has accelerated. Wuhan's reported cases of
pneumonia already far exceed those of the SARS epidemic, but the case fatality
rate is lower.
People are infected in most countries, and health professionals insist on the need to
follow preventive measures and avoid social alarm.
authorities insist on the need to stay home to contain the transmission.
The origin of these viruses is unknown, but certain animals, such as bats,
are known to act as reservoirs.
the infection usually occurs through the respiratory route, through the respiratory
droplets that people produce when they cough, sneeze, or speak.
COVID-19, also known as Wuhan coronavirus, has an animal origin. In fact,
the first cases have been related to a live animal market in the city of Wuhan, in China.
and an animal source of infection in humans, as specified by the World Health
Organization in its descriptive note on the disease. However, the specific role of camels
in virus transmission and the exact route (s) of transmission are unknown.
animals to people. From the analysis of several of its genomes, the virus is believed to
have originated from bats and was transmitted to camels at some point in the distant past.
subsequently leaping to some other small mammal species, such as the civet,
and lastly to humans.