Bharat Biotech International Limited supplies Live Oral Poliomyelitis Vaccine – OPV. Bharat Biotech International Limited manufactures vaccines and biotherapeutics. Live Oral Poliomyelitis Vaccine – OPV is used for active immunization of infants and children against poliomyelitis. Live Oral Poliomyelitis Vaccine – OPV is a trivalent vaccine containing aqueous suspension of types 1,2 and 3 attenuated poliomyelitis viruses [sabin strains], derived from PMKCC. It appears in a clear liquid with a light pink or red color, which may change to pale yellow in frozen condition. This comes under the brand name of BIOPOLIO™.