Answer:
Because they are educated and they think carefully and suitably.
The answer is, “The Americans with Disabilities Act (ADA) prohibits employers from discriminating against employees or applicants with disabilities in all aspects of employment including hiring, pay, promotion, firing, and more. It also protects employees from retaliation when they enforce their rights under the law. (To learn more about ADA rules for the hiring process, read Nolo's article on getting hired with a disability.)”
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.