historical

• John Snow’s epidemiological approach was essential in determining the cause of the 1854 Cholera outbreak, despite the opposition he faced by members of the public. He collected and analysed data from primary and secondary sources. He made links between pieces of collected data and identified the cause of the spread of the outbreak. He was able to convince others in society of his reasoning due to his extensive researched, so that knowledge and understanding of cholera changed. His discovery was significant, as it provided the first indication that cholera could be controlled by providing and maintaining a clean water source. His methods are still used today in epidemiology .
• The strategies to predict and control malaria have been partly effective. Although, draining swamps has been ineffective as it is impractical. Attempting to kill the vector (mosquito) with insecticides such as DDT (and others) was effective until the mosquito developed resistance to them. chemical drugs such as chloroquine were partly effective against the Plasmodium until it became resistant to them. Drugs made from artemisinin are effective as there is lower chance of the parasite developing resistance against it. The emphasis is on preventative methods such as wearing long sleeve clothing and sleeping under mosquito nets as well as taking preventative antimalarial medications such as mefloquine.