What is a vaccine-derived poliovirus?
Topics Covered: Issues related to Health. What is a vaccine-derived poliovirus? What to study? For Prelims: Polio- symptoms, spread and prevention, vaccine- derived poliovirus? For Mains: Recurrence- concerns and challenges, ways to address them. Context: In the last one year or so, polio has made a comeback in countries such as the Philippines, Malaysia, Ghana, …