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Abstract:
The meningococcic meningitis cases which appeared in Ankara in 1973 had ceased by 1976. The monthly distribution of the cases conforms well with the distribution schemes of other countries, where the peak months were the late winter and the early spring months. Beside the peak months some cases were seen throughout the year. Although the peaks disappeared after 1977, a few cases continued to be seen again. In the identification of the aetiological agent, the serogroup B was the predominant (70 cases, 45.5%) and the serogroup A was the next in prevalence (41 cases, 26.6%). When the aetiological agent was considered, no correlation could be established between the epidemic which had occurred in same periods in Ankara and in Istanbul.
Insights
Meningitis cases in Ankara, primarily serogroup B, peaked in winter/spring and declined by 1976. A few cases persisted annually, with no correlation to Istanbul epidemics.
Area of Science:
- Epidemiology
- Infectious Diseases
- Public Health
Background:
- Meningococcal meningitis outbreaks pose significant public health challenges.
- Understanding disease patterns and causative agents is crucial for control strategies.
Purpose of the Study:
- To analyze the epidemiological trends of meningococcal meningitis in Ankara between 1973 and 1977.
- To identify the predominant serogroups responsible for the observed cases.
Main Methods:
- Retrospective analysis of meningococcal meningitis case data from Ankara.
- Seasonal distribution analysis of reported cases.
- Serogroup identification of the causative Neisseria meningitidis strains.
Main Results:
- Meningococcal meningitis cases in Ankara, initially observed in 1973, ceased by 1976.
- Case distribution peaked during late winter and early spring months, consistent with global patterns.
- Serogroup B was the most prevalent (45.5%), followed by serogroup A (26.6%).
- No correlation was found between Ankara's epidemic periods and those in Istanbul.
Conclusions:
- The study highlights a decline in meningococcal meningitis cases in Ankara by 1976, with seasonal peaks typical of the disease.
- Serogroup B dominated the identified etiological agents.
- Geographical correlation with Istanbul epidemics was not established, suggesting localized or distinct transmission dynamics.