BE’s oral polio vaccine gets WHO’s pre-qualification status BusinessLineWHO grants pre-qualification status for Biological E.’s novel oral polio vaccine type 2 The HinduBiological E’s nOPV2 polio vax get WHO prequalification The Times of IndiaBE’s Oral Polio Vaccine Gets WHO Pre-Qualification RediffmailHyderabad-based pharma company gets WHO PQ status for oral polio vaccine The Siasat Daily