To increase awareness of Cytomegalovirus and promote National CMV Awareness Month, Moderna created this CMV Quiz to let you play by yourself or compete with friends and family to find out who knows more about CMV and other latent viruses. Viruses are a natural part of our day-to-day lives. While the immune system gets rid of most viruses in days to weeks, some of them stay inside us our entire lives. These viruses are called "latent." Usually, they hide quietly without causing symptoms. But when they come out of hiding, or reactivate, latent viruses can cause transient illness or long-term disease. For instance, did you know that CMV is the most common infectious cause of birth defects? At any time, you can say "Alexa, next" to move to the next question or "Alexa, stop" to exit the quiz. Ready to learn more? Let's get started! Note: the information in this skill is provided for informational and educational purposes only. It is not a substitute for professional medical advice, treatment or diagnosis. Call your doctor to receive medical advice. If you think you may have a medical emergency, please dial your local emergency response phone number.