West Coast EMT Block One Exam

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Vaccination against the hepatitis A virus is unnecessary if you:

have been infected with hepatitis in the past
have a weak immune system
received a hepatitis B vaccination
are older than 35 years of age

The correct answer is: have been infected with hepatitis in the past

The statement regarding vaccination against the hepatitis A virus being unnecessary if someone has been infected with hepatitis in the past is accurate because previous infection typically results in the body developing immunity to the virus. When a person has had hepatitis A, their immune system responds by producing antibodies that help prevent future infections from the same virus. Therefore, individuals who have had hepatitis A generally do not need to be vaccinated, as they are already protected due to their prior exposure to the virus. In contrast, having a weak immune system, receiving a hepatitis B vaccination, or being older than 35 years of age do not guarantee immunity to hepatitis A. Those conditions alone do not affect the need for hepatitis A vaccination, as the immune response varies among individuals, and prior infection is the primary factor influencing the necessity for the vaccine.