Multiple Choice
Which of the following statements about urine, feces, and saliva is correct regarding bloodborne pathogens?
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1. Introduction to Microbiology
Introduction to Microbiology
Multiple Choice
Vaccination against the hepatitis A virus is unnecessary if you:
A
are over 65 years old
B
have a family history of hepatitis B
C
have already had a confirmed hepatitis A infection
D
have received the influenza vaccine
Verified step by step guidance1
Step 1: Understand the purpose of vaccination, which is to provide immunity against a specific pathogen by stimulating the immune system without causing the disease.
Step 2: Recognize that vaccination against hepatitis A is generally recommended for individuals who have not been previously infected or exposed to the virus, as they lack natural immunity.
Step 3: Identify that if a person has already had a confirmed hepatitis A infection, their immune system has developed natural immunity, making vaccination unnecessary for them.
Step 4: Note that factors such as age over 65, family history of hepatitis B, or having received the influenza vaccine do not provide immunity against hepatitis A and therefore do not eliminate the need for hepatitis A vaccination.
Step 5: Conclude that the correct reason for not needing hepatitis A vaccination is having a confirmed past infection with hepatitis A, as this confers immunity.
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