In Florence, there were three main disease that were spread and killed over half of the people of the city; bloody flux, influenza, and the Black Death. The main disease would be the Black Death, because it had much more effect than any other diseases and faster towards both environments. Because these diseases spread by airborne, any access to skin to skin contact, saliva, touching contaminated surfaces, and some believed that the air was polluted which can be easier to contaminate everyone in the …show more content…
I explain to him why injecting someone 's body with a disease will prevent them from getting the disease or reduce the transmission of the disease among that person and other individuals. First, this can help us understand more how we can prevent and treat this disease by vaccination using the methods I have explained. Also, vaccines that are made with killed versions of pathogens or part, they are not able to cause illness, when that person receives the vaccine(s). When injected with the disease and vaccinated, the person is no danger of developing the disease. Although, some replicate thought not well, mutation is possible which can result in a virulent form of the pathogen, which is why we need to be careful. Although there is often conflict between a person 's rights to decide what is best for themselves and their family and what is best for society as a whole. If that person isn 't treated or injected there will be some situations. When fewer people are vaccinated, the number of cases of the disease increases, the disease will rapidly spread and easier to spread (ex: influenza) and a greater chance of dying. By the scientific methods, observation, hypothesis, and testing can lead to a good conclusion. Once this is done, we can then identify the cause of the epidemic(s). Injecting someone 's body with a disease will prevent them from getting the disease, and not only them,