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Seasonal variation of febrile convulsion in Japan
Author(s) -
Tsuboi Takayuki,
Okada Shigeko
Publication year - 1984
Publication title -
acta neurologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.967
H-Index - 95
eISSN - 1600-0404
pISSN - 0001-6314
DOI - 10.1111/j.1600-0404.1984.tb07814.x
Subject(s) - convulsion , incidence (geometry) , medicine , febrile convulsions , seasonality , pediatrics , respiratory tract infections , febrile seizure , el niño , respiratory system , epilepsy , biology , ecology , physics , psychiatry , optics
— The 6‐year incidence rates of febrile convulsions in all 3‐year‐old children in Fuchu (covering 95% of children, number examined 17,044) was 8.2%. The incidence was higher in boys than in girls (9.0%: 7.5%, P < 0.001). The incidence rates varied with the month and year of birth, but the variations observed were slight. Two peak appearances of seasonal variation of the first febrile convulsion were found in November‐January and in June–August. The former could be interpreted as a tendency to winter virus infection of the upper respiratory tract in children. The other peak in summer could be explained as a tendency to gastrointestinal infection. Liability to febrile convulsion was influenced by the age of children and by the seasonal variations of febrile illness, but not by the season of birth.