NEET BIOLOGY

Detailed explanation-1: -Infectious diseases are transmitted from person to person by direct or indirect contact. Certain types of viruses, bacteria, parasites, and fungi can all cause infectious diseases. Malaria, measles, and respiratory illnesses are examples of infectious diseases.

Detailed explanation-2: -Communicable (also known as infectious or transmissible) diseases are caused by microorganisms such as bacteria, viruses, parasites and fungi that can be spread, directly or indirectly, from one person to another.

Detailed explanation-3: -A communicable disease is one that is spread from one person to another through a variety of ways that include: contact with blood and bodily fluids; breathing in an airborne virus; or by being bitten by an insect.

Detailed explanation-4: -Direct: involves direct body surface to body surface contact and physical transfer of microorganism between an infected or colonized person to another person by touch. Indirect: involves contact between a person and a contaminated object. This is often a result of unclean hands contaminating an object or environment.

Detailed explanation-5: -Indirect contact transmission involves fomites; an object that becomes contaminated by touch (the fomite) then spreads the infection by touch. Conjunctivitis, or “pink eye, ” is commonly spread by touch. Other examples include Respiratory syncytial virus (RSV), shingles, and Ebola.