[Meningococcic meningitis epidemic in Ankara].

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.