Vacuum cleaning does not sufficiently reduce mite allergens from beddings.

Introduction: Conflicting results exist with regard to the efficacy of vacuum cleaners on the removal of mite allergens from bedding.

Objectives: The authors prospectively compared a short term efficacy of two types of regular vacuum cleaners (National-N and Hoover-H) with a specialized cleaner (Vorwerk-V) in the removal of mite allergens from mattresses.

Material And Method: Thirty-five dormitory beds with high mite allergen concentrations at the baseline period (month 0) were selected.

Exercise-induced asthma among Thai asthmatic children.

Background: Approximately seventy per cent of asthmatic children from temperate climates, with normal lung function, have exercise-induced asthma (EIA). There is certain evidence to suggest that EIA may be less frequently encountered among children who live in tropical climates. Prevalence of EIA in Asian asthmatic children has never been thoroughly studied.