The Black Death, also known as the Great Plague, the Black Plague, or simply the Plague, was one of the most devastating pandemics in human history, resulting in the deaths of an estimated 75 to 200 million people in Eurasia and peaking in Europe from 1347 to 1351.[1][2][3] The bacterium Yersinia pestis, which results in several forms of plague, is believed to have been the cause.[4]

There are no exact figures for the death toll; the rate varied widely by locality. In urban centres, the greater the population before the outbreak, the longer the duration of the period of abnormal mortality.

In crowded cities, it was not uncommon for as much as 50% of the population to die.[36] The disease bypassed some areas, and the most isolated areas were less vulnerable to contagion. Monks and priests were especially hard-hit since they cared for victims of the Black Death.

https://en.wikipedia.org/wiki/Black_Death

If you have to live in cities move to poor places i.e. Budapest where migrants can't mooch of gibmedats and women have some incentives to play nice, but men are not so poor to go out to rob, steal and cook up meth.