Coronavirus Outbreak: All the Secrets Revealed About the Covid-19 Pandemic. A complete Rational Guide of its Evolution, Expansion, Symptoms and First Defense

Where Has the Virus Spread?
We still don't know how exactly Covid-19 spreads, but we do have a lot of
data on how MERS, SARS, and other respiratory viruses travel from person
to individual. In fact, this is primarily by exposure to droplets caused by
sneezing or coughing. So when a sick individual coughs or sneezes, they let
out a mist, and when those droplets touch another person's nose, eyes, or
mouth, they will pass on the virus. In rare cases, a person can indirectly catch
a respiratory illness, "by touching droplets on surfaces— and then touching
mucosal membranes" in the mouth, eyes, and nose. This is why hand-
washing is an important measure of public health and particularly in an

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outbreak.
The virus spread rapidly because it began in a transport hub. Wuhan is a hard
place to get an outbreak in. It has 11 million people, more than the City of
New York. On a typical day, 3,500 passengers take direct flights to towns in
other countries from Wuhan. Those cities were among the first outside of
China to record virus cases. Wuhan is also a major transportation center
within China, linked by high-speed trains and domestic airlines to Beijing,
Shanghai and other major cities. Up to two million people flew from Wuhan
to other places inside China in October and November last year.
During the SARS outbreak in 2003, China had not been nearly as well
associated. Large numbers of migrant workers are now moving domestically
and internationally— to Africa, other parts of Asia and Latin America, where
China's Belt and Road Initiative is making a huge infrastructure drive. This
travel poses a high risk of outbreaks in countries with health-care systems not
equipped to handle them, such as Zimbabwe, which is facing a growing
hunger and economic crisis.
Furthermore, China has about four times as many passengers on the train and
air as it did during the SARS outbreak. China took the unprecedented step of
enforcing travel restrictions on tens of millions of people living in Wuhan
and surrounding towns. Experts, however, cautioned that the lockout might
have come too late, with restricted access to food and medication. Wuhan's
mayor confirmed that five million people had left the city in the run-up to the
Lunar New Year, before the restrictions began.