Fulminant serogroup B meningococcemia in an adolescent vaccinated against serogroups A and C: highlighting the serogroup B vaccination gap in China—a case report and literature review
Invasive meningococcal disease (IMD) remains an acute clinical challenge associated with high mortality and permanent disability. Although routine immunization has successfully suppressed historical lineages, an expanding epidemiological shift toward serogroup B in specific regions has exposed a population vulnerab...