text_1: A country's Vaccine Alliance (GAVI) eligibility is not indictivate of accelerated adoption of the Hub vaccine.
text_2: Using the case of Haemophilus influenzae type b (Hib) vaccine, this paper endeavors to explain these delays through the analysis of country-level economic, epidemiological, programmatic and policy-related factors, as well as the role of the Global Alliance for Vaccines and Immunisation (GAVI Alliance).