“We could provide timely, sensitive data on population health”
The 19th century saw the rapid development of sentinel surveillance systems which informed important health policy decisions. In the 20th century, microbiology and computer advances improved disease surveillance and public health communication. Now, in the 21st century, we have access to low cost and quick identification of pathogens. Additionally, we now use big data systems e.g. electronic medical claims which allow us to compare diseases in time and place .