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10
SCARLET FEVER.
The cases certified numbered 383 of which 33 or 8.6 per cent. were subsequently
not regarded as scarlet fever.
The corresponding percentage during recent years has been 1.7 in 1920, 2.5 in
1921, 1.4 in 1922, 1.2 in 1923, 13.4 in 1924, 11.7 in 1925, 14.6 per cent. in 1926.

The cases are grouped according to ages in Table II. (Appendix). With exception
of five cases all those certified during the year were removed to hospital. The attack
rate was 3.7 per 1,000 inhabitants. It was lowest in Wenlock and highest in Kingsland,
being 3.1 per 1,000 in the former as compared with 5.0 in the latter.
The deaths were at the rate of 0.03 per 1,000 population. There were no deaths
in Moorfields, Hoxton, Wenlock, Kingsland, Haggerston and Acton Wards. The case
mortality was a shade under 0.7 per cent.
Amongst children under five years there were 131 cases with a case mortality,
allowing for errors in diagnosis, of 1.8 per cent. The case mortality amongst persons
over five years was only 0.4 per cent., errors in diagnosis being allowed for.
The casts certified as scarlet fever in London numbered 13,265, and were at the
rate of 2.9 per 1,000 population. The deaths numbered 63, being at the rate of 0.01
per 1,000 population, as estimated for the middle of 1926. Taking the cases certified
the case mortality for the Metropolis was barely 0.5 per cent.
DIPHTHERIA (INCLUDING MEMBRANOUS CROUP).
The cases certified numbered 467, of which 87 or 18.6 percent., were subsequently
not regarded as being diphtheria. This percentage is lower than that for 1926.