M 57
children over female children owing to less care being given amongst the poor people to the preservation of female infant lives than to the preservation of male infants.
A
The excess of female over male cases under the age of ten is therefore not especially indicative of greater chances of infection amongst the females than amongst the males.
The difference in the population of cases amongst children in the two years is remarkable.
In 1923 the children provided 37.16 per cent. of the Chinese cases while in 1924 they only amounted to 11.64 per cent.
This adds support to the view that the source of infection in the year 1923 when there was no epidemic wave as in 1924 super-imposed on the usual curve of incidence, were of domestic origin e.g. the necessity during a shortage of water of collecting and storing it in any available receptacle.
Deaths from Typhoid and Paratyphoid Fevers.
The following table shows the deaths from these diseases for nine years from 1914 to 1924 (excluding the years 1916 and 1918 the necessary details for these two years being unavailable) distributed according to age groups.