Yellow fever the introduction of sugar plantations created the conditions for mosquito and viral reproduction, and subsequent outbreaks of yellow fever. Deforestation reduced populations of insectivorous birds and other creatures that fed on mosquitoes and their eggs. Although yellow fever is most prevalent in tropical-like climates, the northern United States were not exempted from the fever. The first outbreak in English-speaking North America occurred in New York City in 1668, and a serious one afflicted Philadelphia in 1793. English colonists in Philadelphia and the French in the Mississippi River Valley recorded major outbreaks in 1669, as well as those occurring later in
Yellow fever in Buenos Aires made of wood or clay and straw. In addition to the epidemic of yellow fever that we have mentioned, there were outbreaks of cholera in 1867 and 1868, which killed hundreds of people. On 27 January 1871, three cases of yellow fever were diagnosed in Buenos Aires. They were all in the San Telmo neighbourhood, which is full of tenements. From this date on, many more cases were registered, mostly in that neighbourhood. The doctors Tamini, Salvador Larrosa and Montes de Oca warned the City Commission of the outbreak of an epidemic. But the Commission, under the leadership of Narciso