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 condition leads to life-long immunity through natural infection?

Hepatitis A
Measles
Pneumonia
COVID-19

The correct answer is: Measles

Measles is the correct answer because it is a viral infection that typically leads to robust, long-lasting immunity once a person has recovered from the disease. When someone contracts measles, their immune system produces a variety of antibodies that provide protection against future infections with the same virus. This natural immunity following a measles infection is usually effective for life. In contrast, while some infections like Hepatitis A do provide immunity after natural infection, they may require booster vaccinations to ensure long-term protection. Pneumonia isn't a single disease and can be caused by various pathogens, with the immune response varying depending on the specific cause. Similarly, COVID-19 has shown that immunity can wane over time, and reinfections can occur, which often necessitates vaccination for ongoing protection. Thus, measles is distinct in its ability to confer enduring immunity after natural infection.