华兰疫苗：冻干b型流感嗜血杆菌结合疫苗获药物临床试验批准

Core Viewpoint - The company has received approval from the National Medical Products Administration for the clinical trial of a lyophilized Haemophilus influenzae type b (Hib) conjugate vaccine, which is expected to induce an immune response against Hib and provide protection to recipients [1] Group 1: Vaccine Development - The Hib vaccine is composed of purified Hib polysaccharide combined with tetanus toxoid protein and is presented in a lyophilized form [1] - The company is also developing a combination vaccine based on the DTP (diphtheria, tetanus, and pertussis) components, with the Hib vaccine being one of the components [1] - Vaccine development is described as a complex and rigorous scientific activity, characterized by significant challenges and long timelines [1]