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How disease causing microorganisms enter into human beings?
a. Pathogens can only enter the body through the skin and cause disease .
b. Infectious agents cannot exist in the atmosphere .
c. Most respiratory tract infections are acquired by inhaling the pathogen transmitted through droplets caused by cough or sneeze, dust, and spores .
d. Tuberculosis, Diphtheria, and Whooping Cough are airborne diseases caused by viruses .
e. Cholera and Typhoid are bacteria-caused waterborne diseases .
f. Is it possible for pathogens to be transmitted from an infected person to a healthy person through blood transfusion? .
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