The general answer is No. The reason is because people didn't change their habits, and that was because they didn't know they needed to. The importance of hygiene was recognized only in the 1800's. Until then it was common that the streets were filthy, with live animals of all sorts around and human parasites abounding. The one exception to this was the concept of quarantine which was tried for the first time in 1377 in what is now the modern day Dubrovnik, Croatia. It worked. However nobody could explain exactly why, and there was a lot of differing opinion about it. The predominant thinking was quarantine isolated "the airs" around diseased patients. Then, nothing much happened until two big breakhroughs in the 1850's. One was an 1854 cholera outbreak in London that was traced to one particular water pump in the city and the whole idea of public health and tracking patients and epidemics was born. Then during the Crimean War, (1853 to 1856) Florence Nightingale introduced the concept of clean bandages, clean sheets, sterilized instruments and washed hands. Wounded British soldier death rates fell 90%. Everyone noticed, and so the big idea of hygiene caught on. The actual deciphering of the cause of the Black Death though wasn't made until 1898, when Paul Louis-Simond figured out the disease was transmitted through flea bites through infected hosts, in this case, rats.
