Cerebro-Spinal Fever in Alipur Central Jail

The first outbreak, or, at least the one of which any record exists, occurred in the year 1885. Subsequently, during the next decade, there were nine further outbreaks. After a cessation for three successive years, the fever broke out,for the eleventh time, at the latter end of 1898. There were three cases only, all occurring in the month of November between the 13th and the 26th. The mortality during the year up to the end of October was exceedingly low, only 17, against 29 and 27 in 1897 and 1896 respectively. The general sickness, too, was correspondingly low ; it was 52 86 and 41-45 in September and October respectively in 1898 against 65 61 and 6677 in September and October 1897. But both the mortality and the sickness rose suddenly in November. From an average of 17 of the preceding ten months the mortality rose to 14 in November, and the sickness rose from 41-45 in October to 68'61. The special conditions to note in this connection were?(1) The