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Meningococcal disease and travel
1Department of Medicine and Infection Prevention and Control Program, National Guard Health Affairs, King Fahad National Guard Hospital, Riyadh, Saudi Arabia. Memish@ngha.med.sa
Abstract:
Invasive meningococcal disease, in both endemic and epidemic forms, is the cause of significant morbidity and mortality worldwide. Despite all advances in therapy, the fatality rate of meningococcal meningitis remains unacceptably high, between 5% and 10%, and a similar proportion suffers long-term neurological sequalae. Prevention of this rapidly fatal disease is of paramount importance. The use of the available internationally licensed meningococcal vaccines would be indicated for individuals with medical conditions that increase the risk of the disease and for travelers to high-risk countries. In the last 2 years, there has been a shift in the epidemic pattern of meningococcal disease during the Hajj (pilgrimage) season, with predominance of Neisseria meningitidis serogroup W135. Recent changes have been made in the policy issued by the Saudi Ministry of Health (Riyadh, Saudi Arabia), which requires visitors from all over the world arriving for purposes of umra and Hajj to show evidence of vaccination against meningitis with the quadrivalent meningococcal vaccine.
Insights
Preventing invasive meningococcal disease is crucial due to high fatality rates. Vaccination against Neisseria meningitidis serogroup W135 is now mandatory for Hajj and Umra pilgrims to curb disease spread.
Area of Science:
- Public Health
- Infectious Diseases
- Vaccinology
Background:
- Invasive meningococcal disease (IMD) causes significant global morbidity and mortality.
- Fatality rates for meningococcal meningitis remain high (5-10%), with survivors often experiencing long-term neurological deficits.
- Prevention is critical due to the rapid and severe nature of the disease.
Purpose of the Study:
- To highlight the importance of meningococcal vaccination for at-risk individuals and travelers.
- To address the recent shift in epidemic patterns of IMD during the Hajj season, noting the predominance of Neisseria meningitidis serogroup W135.
- To inform about updated health policies requiring vaccination for pilgrims.
Main Methods:
- Review of epidemiological data on meningococcal disease patterns.
- Analysis of public health policy changes regarding vaccination requirements.
- Emphasis on the role of quadrivalent meningococcal vaccines.
Main Results:
- A shift in IMD epidemiology has been observed, with Neisseria meningitidis serogroup W135 becoming predominant during the Hajj season.
- The Saudi Ministry of Health has implemented new policies requiring proof of vaccination against meningitis for all Hajj and Umra visitors.
- Quadrivalent meningococcal vaccination is recommended for high-risk groups and travelers.
Conclusions:
- Updated vaccination policies are essential to control the spread of IMD, particularly serogroup W135, during mass gatherings like Hajj and Umra.
- Meningococcal vaccination remains a key strategy for preventing severe disease, mortality, and long-term sequelae.
- International travelers and individuals with specific medical conditions should consider vaccination.