11,119 patients with scarlet fever admitted in the last sixteen years, from 1973 
to 1988, to Sapporo City General Hospital, were studied statistically on 
symptoms and laboratory findings. The results were summarized as follows: 1. 
Annual number of patients have reduced suddenly since 1981, and become zero in 
1989. The patients increased in number during the winter season. Eighty two 
percent of the cases were between 3 and 8 years of age, and the average age was 
5.8 year-old. 2. Cases of above-38 degrees C temperature were seen in about 
81.4%, and from 2 to 5 days-duration of temperature were seen in 86.6% of the 
patients in the year 1976. Cases of above-moderate rash were observed in 68.2%, 
sever redness of throat in 29.9%, strawberry tongue in 86.3% and angular 
stomatitis in 37.7% of the patients. In recent statistical analysis (1982-1988), 
we found, however, a tendency that patients having stronger symptoms were being 
introduced to our hospital. 3. The higher rates of cases showing elevated ASD 
titer were seen in the elder patients and in the winter. C-reactive protein 
(CRP) titers were mostly in the range of (-) to (greater than or equal to 6+), 
having 2.4 + on an average. 4. Patients who developed into overt nephritis were 
not seen. Cases of microscopic hematuria (greater than or equal to 3 red cells/f 
in urine sediments), however, were observed in 1.1% (125/11,119). Sever 
complications were hardly seen. 5. Reappearance of beta-hemolytic streptococci 
(on a week after discharge) were found in 3.1% (241/7,877). 6. Reinfection or 
relapse cases of scarlet fever were found in 6.7% (642/9,585).(ABSTRACT 
TRUNCATED AT 250 WORDS)