Question

question 4 (2.5 points)
which statement describes the chain of infection?
a series of steps developed to control the transmission of infection
the process the body uses to fight infection
an interactive process by which infections are transmitted
the transmission of disease by insects
question 5 (2.5 points)
which of the following is an example of a nonspecific immune defense?
inoculation
skin
antibody
antigen
question 6 (2.5 points)
used needles should never be recapped.
true
false
question 7 (2.5 points)
different people may experience different symptoms from the same viral infection

Explanation:

Question 4

• Option 1: Steps to control infection is infection control, not chain of infection.
• Option 2: Body's process to fight infection is immune response, not chain of infection.
• Option 3: Chain of infection is the interactive process (reservoir, portal of exit, mode of transmission, portal of entry, susceptible host) by which infections are transmitted.
• Option 4: Disease transmission by insects is vector - borne transmission, a part of some infection transmission but not the chain of infection.

• Option 1: Inoculation (like vaccines) is a specific immune defense as it targets specific pathogens.
• Option 2: Skin is a physical barrier and part of the innate (nonspecific) immune system. It defends against all pathogens generally.
• Option 3: Antibodies are part of the specific immune response as they target specific antigens.
• Option 4: Antigens are substances that trigger an immune response, not a defense.

Used needles should never be recapped because recapping can lead to needlestick injuries, which can transmit blood - borne pathogens. This is a standard safety protocol in healthcare.

Answer:

C. An interactive process by which infections are transmitted

Question 5