VACCINE CHARACTERISTICS VA-MENGOC-BC® is an injectable suspension for intramuscular use. Each 0.5 mL dose contains 50 µg of outer membrane vesicles (OMVs) from serogroup B meningococcus (B:4:P1.19,15:L3,7,9 strain) and 50 µg of the purified capsular polysaccharide of meningococcal serogroup (C C11 strain), adsorbed onto an aluminum hydroxide gel (2.0 mg) as adjuvant. The vaccine also contains thimerosal (0.05 mg) as preservative, disodium hydrogen phosphate (0.03 mg), dehydrated sodium dihydrogen phosphate (0.302 mg), sodium chloride (4.25 mg), and enough water for injection to complete volume. The vaccine is available in 1, 10, and 20-dose ampules. Manufacturing is carried out according to strict quality assurance and control protocols from raw materials to final product, complying with Standard Operating Procedures (SOPs) based on good manufacturing and laboratory practices, including appropriate certification of technical and laboratory equipment used throughout production. This ensures quality and consistency of the vaccine lots produced.