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it was caused by the virus Sania pestis. The rats and flies were responsible to infect humans.
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The disease spread in two directions: north to Alexandria and east to Palestine.
The type of plague that struck the Byzantine Empire during the reign of Justinian was bubonic (Yersinia pestis) -
Ships return to Sicily with a strange and new disease, that formed dark selling or buboes.
spread through people's fleas and lice. -
This caused the Cuarenta G or Deni, best known as the first quarantine on the world.
Also, this caused 100-200 million deaths, the third part of all the population. -
It has started in Europe, but they went to the Americas to colonize them. So, this virus passed to native Americans, making the colonizers win their territory.
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90% of native Americans die.
A black slave of the chapitan Pánfilo de Narváez arrive on Veracruz, starting to infect everyone. -
Is a virus that attacks the respiratory system, transmitted into the air, and can then can be inhaled by anyone nearby.
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It infected an estimated 500 million people worldwide and killed an estimated 20 million to 50 million victims.
At the time, there were no effective drugs or vaccines to treat this killer flu strain. -
was introduced into the human population around 1920 to 1940. HIV-1 evolved from non-human primate immunodeficiency viruses from Central African chimpanzees
In 2012, approximately 30,000 new HIV diagnoses have been reported. -
Polio has been eradicated in much of the world thanks to a global vaccination campaign. The virus spreads from person to person and can infect a person's spinal cord, causing paralysis (can't move parts of the body).
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Many people infected with the coronavirus do not feel sick or have any symptoms at all, but they can still transmit the coronavirus to other people. Actually, They are testing a vaccine.
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There have been approximately 1,547,487 deaths reported worldwide. Doctors and scientists are working to estimate the mortality rate of COVID-19, but at present, it is thought to be substantially higher (possibly 10 times or more) than that of most strains of the flu.
And we still going... -
Transmission of HIV via blood or transplanted organs, including bone, is possible from about days 5-6 after infection of the donor. Also the mother-child transmission during pregnancy.
25-35 million deaths approximately till our days.
