# Meningococcal disease concerns in Vietnam > Live situation record from CLSTR: https://clstr.news/situations/meningococcal-disease-concerns-in-vietnam > Updated: 2026-10-21T00:58:44.000Z. Sources: 6. Developments: 2. Following the death of a student, health experts in Vietnam have addressed concerns regarding meningococcal disease, an acute infection caused by Neisseria meningitidis. While medical professionals note that infection rates remain low relative to the national population, the disease is classified as a Group B infectious disease under local law due to its potential to cause meningitis, septicemia, and rapid death. High-risk groups identified include infants, children under five, adolescents aged 15–24, individuals in collective living environments such as dormitories, and those with compromised immune systems. The disease is primarily transmitted through respiratory droplets. In response to the situation, the Ho Chi Minh City Center for Disease Control (HCDC) has provided guidance on vaccine effectiveness. Experts noted that protection from vaccines like MenACWY decreases over time, necessitating boosters for adolescents. While certain vaccines, such as the VA MENGOC BC from Cuba, may not require boosters after two doses, medical professionals emphasize that immunity levels can trend downward, making vaccine selection dependent on age, health status, and specific risk factors. ## Timeline ### 2026-10-21: Medical expert discusses meningococcal disease trends in Vietnam Dr. Pham Ngoc Thang notes that meningococcal disease in Vietnam has a low infection rate but remains a risk for children, adolescents, and those in collective living environments. 4 sources. https://clstr.news/cluster/medical-expert-discusses-meningococcal-disease-trends-in-vietnam ### 2026-10-20: Meningococcal vaccine effectiveness and booster requirements in Vietnam Health experts in Vietnam clarify that meningococcal vaccine protection varies by type and may require boosters to maintain immunity against the fast-moving Neisseria meningitidis bacteria. 3 sources. https://clstr.news/cluster/meningococcal-vaccine-effectiveness-and-booster-requirements-in-vietnam --- Cite as: Meningococcal disease concerns in Vietnam. CLSTR, https://clstr.news/situations/meningococcal-disease-concerns-in-vietnam