pneumococcal ppsv23 medium risk adult :: Article Creator Invasive Pneumococcal Disease Prevention In Adults This content was created by Everyday Health Media on behalf of an advertiser. More Information. Content on this page was created by the Everyday Health Media team and is funded by an advertiser. The content conforms to Everyday Health Media's editorial standards for accuracy, objectivity, and balance. The advertiser may select the specialty area but does not edit or approve the content. Chickenpox In Adults Although chickenpox is often thought of as a childhood disease, adults are still susceptible and symptoms tend to be more severe. However, if you've had chickenpox as a child, you're unlikely to get chickenpox as an adult. Also known as varicella, chickenpox is caused by the varicella-zoster virus (VZV). It is most often recognized by a rash of itchy red blisters that appear on the face, neck, body, arms, and legs. Pe...