yellow fever in Buenos Aires
1852 CE.
Shown on the map at -37.000°, -60.000°.
The Yellow fever in Buenos Aires was a series of epidemics that took place in 1852, 1858, 1870 and 1871, the latter being a disaster that killed about 8% of Porteños: in a city where the daily death rate was less than 20, there were days that killed more than 500 people. The Yellow Fever would have come from Asunción, Paraguay, brought by Argentine soldiers returning from the war just fought in that country, having previously spread in the city of Corrientes. As its worst, Buenos Aires population was reduced to a third because of the exodus of those escaping the scourge. Some of the main causes of the spread of this disease were the insufficient supply of drinking water, pollution of ground water by human waste, the warm and humid climate in summer, the overcrowding suffered by the black people and, since 1871, the overcrowding of the European immigrants who entered the country incessantly and without sanitary measures.
Text from the Wikipedia article Yellow fever in Buenos Aires, licensed CC BY-SA 4.0.