Infectious diseases and day-care centre environment.

Area of Science:

• Environmental Health
• Pediatric Public Health
• Infectious Disease Epidemiology

Background:

• Day-care centers are critical environments for childhood development and disease transmission.
• Understanding factors influencing infection-related absences is crucial for public health interventions.

Purpose of the Study:

• To investigate the frequency of infection-related absences in day-care centers.
• To explore the relationship between indoor air quality (carbon dioxide levels) and absence rates.
• To identify factors contributing to variations in infectious morbidity within day-care settings.

Main Methods:

• Longitudinal study of 25 day-care center departments in Växjö, Sweden (1986-1987 and 1989-1990).
• Absence data due to infection was collected and analyzed.
• Indoor air carbon dioxide (CO2) levels were measured in departments, differentiating between converted dwellings and purpose-built facilities.

Main Results:

• Mean infection-related absence decreased from 6.6% to 5.6% in a follow-up study of 7 departments.
• Observed variations in infectious morbidity could not be explained by physical environment or working routines.
• Significantly higher indoor CO2 levels (822 ppm) were found in converted dwellings compared to purpose-built centers (458 ppm) (p=0.028).

Conclusions:

• While infection-related absences in day-care centers may decrease over time, specific environmental factors require further investigation.
• Indoor air quality, particularly elevated carbon dioxide levels in older building conversions, may be a relevant factor impacting health within day-care settings.