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83
SECTION Y.
PREVALENCE AND CONTROL OF INFECTIOUS DISEASE.
Table XXXIV. gives the figures for ages and wards.
Scarlet Fever was not so prevalent as in 1930; the largest
incidence has been in Waddon, West Thornton, Woodside, Thornton
Heath, Norbury and Broad Green Wards. Based on the estimated
ward populations, the case rate for these wards was
respectively, 372 ; 359 ; 309 ; 250; 212 ; and 221 per 100,000 of the
population. The age group 5-15 years, as usual, suffered most;
cases in this group comprising 58.4% of the total.
Diphtheria was not so prevalent as in 1930, most cases, as in
1930, occurred in Upper Norwood (case rate 262) ; West Thornton
(108) ; Waddon (170) ; Norbury (103) ; and Broad Green (107).
Once again the age group 5-15 years gave the highest figures.
Fifty-one cases of Small Pox occurred, all were of the modified
type, 19 in Waddon, 13 in Broad Green and 7 in West Thornton.
The outbreak is dealt with in detail later in this section.
There were 23 cases of Puerperal Fever and 50 of Puerperal
Pyrexia; 26 occurred in the age group 16-25 years and 47 in the
age group 26-45 years. A majority of the cases occurred in women
having their first confinement.
All the notifiable infectious diseases showed a decreased incidence
with the exception of Small Pox and Acute Primary Pneumonia
and the Puerperal conditions. There was a notable increase
to the notification of both Puerperal Fever and Puerperal Pyrexia.
The probable reason for this given in the obstetrical section of
the report (page 161).
The following streets or districts showed the highest incidence
Scarlet Fever, namely, the Corporation Housing Estate, MitMitcham
Road ; Mayday Road Hospital. Otherwise the cases were
Widely scattered over the whole borough area. Diphtheria showed
the highest area incidence in Hermitage Road owing to an outbreak
to the Convent, and on the Waddon Housing Estate, cases
otherwise were widely scattered.
The incidence of the commoner infectious diseases in Croydon
during the past eight years is of interest.