Polio is caused by ……? May 26, 2021 / By Preparation Point / Deputy Social Welfare Officer 2020 Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedInA) Virus B) Bacteria C) Both A & B D) None of these Share this:TwitterFacebookMoreTelegramWhatsAppLike this:Like Loading... Related Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn