The effect of air humidification on different symptoms in office workers — An epidemiologic study

Abstract The effects of air humidification were studied in the Pasila Office Center, a modern eight-floor office building of 2150 workers in Helsinki, Finland. The occurrence of symptoms and complaints among the workers in the humidified part of the building (n = 122) was compared to the symptoms and complaints of workers in similar nonhumidified rooms (n = 132) in February, March, and April. The workers in the humidified part reported significantly less dryness of skin, throat and nose, and nasal obstruction as well as sensation of air dryness compared to those in the non-humidified part. There was no evidence of humidifier fever symptoms during the study period.

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