Á¦ ¸ñ    qTjnzBHTpgRvQQ ÀÌ ¸§    Rosario ³¯ Â¥    2018/06/27 Á¶ ȸ    12 Directory enquiries buy-otc.com “Type A (flu viruses) are the ones that are the most common,” he said. “The B virus is a lot less common and it doesn’t mutate as readily, therefore it’s not as likely that if you get the flu that it’s due to B.”