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Vacuum cleaning does not sufficiently reduce mite allergens from beddings
Pakit Vichyanond1, Nualanong Visitsuntorn, Sirirut Ruengruk
1Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
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. They were matched into three groups according to group I mite allergen concentrations (N 11 beds, H 12 beds, V 12 beds). Vacuuming was performed on months 1 and 4 by the assigned vacuum cleaner in each group. Immediately after, mattresses were vacuumed by a reference cleaner (another National vacuum cleaner) at both months. Vacuuming was performed over the entire bed for 2 minutes/square meter. Group I mite allergens (sums of Der p 1 and Der f 1) were measured; concentrations and total mite allergens removed by the tested cleaners as well as by the reference cleaner, at various time points, were compared.
Results:
Ability to remove mite allergens by vacuum cleaners depends on weight of dust removed and also on mite concentrations in the dust samples. Despite the fact that H and V appeared to remove higher mite allergens than N, such differences were not statistically significant (p > 0.05), both at month 1, and 4. Surprisingly, mattress mite concentrations removed by both high capacity cleaner groups (V & H) increased at month 4, whereas, it remained unchanged in the third group (N). This increase led to a concomitant increase in total allergen removed by V and H. Nevertheless, remaining total allergens in the mattresses in V and H, as judged from the amount of allergens obtained by the reference cleaner, increased at month 1 and 4 compared to baseline values (p < 0.05), whereas, no change was observed in N.
Conclusion:
Although high capacity vacuum cleaners removed a large amount of mite allergens from mattresses, they did not sufficiently reduce mattress mite allergen burden as determined by the reference cleaner during this short term study.
Insights
High-capacity vacuum cleaners removed significant mite allergens but did not sufficiently reduce the overall allergen burden on mattresses in this short-term study. Further research is needed to assess long-term effectiveness.
Area of Science:
- Allergy and Immunology
- Environmental Health
- Consumer Product Testing
Background:
- Mite allergens in bedding are a significant concern for allergic individuals.
- Previous studies on vacuum cleaner efficacy for allergen removal have yielded conflicting results.
Purpose of the Study:
- To prospectively compare the short-term efficacy of regular (National-N, Hoover-H) and specialized (Vorwerk-V) vacuum cleaners in removing mite allergens from mattresses.
- To evaluate the impact of vacuuming on residual mite allergen levels.
Main Methods:
- Thirty-five dormitory mattresses with high initial mite allergen levels were selected and divided into three groups.
- Vacuuming was performed using assigned cleaners (N, H, V) at months 1 and 4.
- Mattress allergen levels were measured before and after vacuuming using a reference cleaner.
Main Results:
- While Hoover-H and Vorwerk-V removed more mite allergens than National-N, differences were not statistically significant.
- Mattress mite allergen concentrations increased in the H and V groups at month 4.
- Residual mite allergens in mattresses increased significantly in the H and V groups compared to baseline.
Conclusions:
- High-capacity vacuum cleaners removed substantial mite allergens but failed to adequately reduce the overall mattress allergen burden in the short term.
- The study highlights the need for more effective methods to manage mite allergen levels in mattresses.