Emergency Medical Technician (EMT) Intermediate Practice Exam

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Prepare for the EMT Intermediate Exam. Utilize multiple choice questions with detailed explanations and hints. Get the confidence you need to pass your exam and advance your career in emergency medical services!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which infection is most likely to confer life-long immunity after infection?

Measles
Rubella
Influenza
Chickenpox

The correct answer is: Rubella

The infection that is most likely to confer life-long immunity after infection is rubella. After a person has contracted rubella, their immune system typically develops a strong and lasting response against the virus. This is similar to the way the body responds to a vaccination, allowing individuals to have protection against future infections. Measles and chickenpox also provide long-lasting immunity, but rubella is often highlighted specifically for its robust, life-long immunity post-infection. Influenza, on the other hand, tends to change frequently due to antigenic drift and shift, meaning that immunity from a previous infection may not protect against different strains encountered in the future. This understanding of rubella's immunity is critical for public health, especially in populations vulnerable to congenital rubella syndrome.