Why is it harder to determine exposure to airborne transmitted diseases than exposure to bloodborne transmitted diseases?

Blood borne transmitted diseases can be easily traced back to its sources as they need a physical medium to transfer which we can measure, calculate, contain and treat while air borne transmitted diseases lack this feature. The microorganism do not need a physical medium to transfer from one host to another making it difficult to contain the virus. 

jomady. when the body perspires due to the temperature rising, trepidation, exercise, or a disease known as hyperhidrosis, then you would lose the sodium and potassium stored in your body, also known as the na+/k+-atpase enzyme.