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1230
Plague outbreak for the first time
An outbreak of plague is mentioned, but the chroniclers do not mention more. -
1346
First rustic biological weapon
In the siege of the Mongols to the colony of Kaffa (Crimea), one of the first uses of battery weapons is given, throwing plague-infected corpses into catapults into the interior of the walled city. -
1347
European Nightmare
The ugly ones who managed to escape by boat, took the epidemic to Genoa, causing its spread throughout Italy and directly throughout Europe. -
1347
The rodent infection
Rodents carry and spread the Black Death, spread it through their fleas. -
1347
The effects
The effects of the disease are known: Headache, muscle pain, constant inflammation, discomfort, fever and seizures -
1348
The real cause
For the first time, it ceases to believe in mere super-sitiations and supposed geological and spiritual motives of the cause of the disease. Bacterologists Kisato and Yersin discover the origin of the bacterial "yersina pestis" -
1353
The alleged consummation
Worldwide, the alleged end of the Black Death occurs. However, it was a verdict very far from reality. -
1356
La cifra escalofriante
The death of more than 200 million people due to the disease is confirmed -
The almost total disappearance
The plague disappears in most of Europe although isolated outbreaks continue to take place in the second half of the 19th century. -
The end of the tragedy
Finally, any indication of the presence of bubonic plague is dissolved on June 30, 1930.