TY - JOUR
T1 - Results of the National Cooperative Inner-City Asthma Study (NCICAS) environmental intervention to reduce cockroach allergen exposure in innercity homes
AU - Gergen, Peter J.
AU - Mortimer, Kathleen M.
AU - Eggleston, Peyton A.
AU - Rosenstreich, David
AU - Mitchell, Herman
AU - Ownby, Dennis
AU - Kattan, Meyer
AU - Baker, Dean
AU - Wright, Elizabeth C.
AU - Slavin, Raymond
AU - Malveaux, Floyd
N1 - Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 1999
Y1 - 1999
N2 - Background: Cockroach allergen is important in asthma. Practical methods to reduce exposure are needed. Objective: We sought to evaluate the effectiveness of house cleaning and professional extermination on lowering cockroach antigen levels in inner-city dwellings. Methods: As part of the National Cooperative Inner-City Asthma Study intervention, 265 of 331 families with asthmatic children who had positive skin test responses to cockroach allergen consented to a professional home extermination with 2 applications of a cockroach insecticide (Abamectin, Avert) combined with directed education on cockroach allergen removal. On a random subset of 48 homes undergoing cockroach extermination in the intervention group, Bla g 1 was measured in settled dust from the kitchen, bedroom, and TV/living room. The first sample was collected 1 week before extermination, with additional samples after the exterminations at approximately 2, 6, and 12 months after the first sample. Self-reported problems with cockroaches were collected at baseline and after 12 months of follow-up in both the intervention and control group. Results: The geometric mean kitchen level of Bla g 1 decreased at 2 months (33.6 U/g) relative to preextermination levels (68.7 U/g, P < .05). The percent of kitchens with over 8 U/g of Bla g 1 followed a similar pattern, but only the decrease from preextermination to 6-month levels was significant (86.8% vs 64.3%, P < .05). By the 12-month visit, the allergen burden had returned to or exceeded baseline levels. Except for an increase in the bedroom at 2 months (8.9 U/g vs 11.1 U/g, P < .05), no other significant change was seen. Only about 50% of the families followed the cleaning instructions; no greater effect was found in these homes. Self-reported problems with cockroaches showed no difference between the intervention and control group after 1 year of follow-up. Conclusions: Despite a significant, but short-lived, decrease the cockroach allergen burden remained well above levels pre-viously found to be clinically significant.
AB - Background: Cockroach allergen is important in asthma. Practical methods to reduce exposure are needed. Objective: We sought to evaluate the effectiveness of house cleaning and professional extermination on lowering cockroach antigen levels in inner-city dwellings. Methods: As part of the National Cooperative Inner-City Asthma Study intervention, 265 of 331 families with asthmatic children who had positive skin test responses to cockroach allergen consented to a professional home extermination with 2 applications of a cockroach insecticide (Abamectin, Avert) combined with directed education on cockroach allergen removal. On a random subset of 48 homes undergoing cockroach extermination in the intervention group, Bla g 1 was measured in settled dust from the kitchen, bedroom, and TV/living room. The first sample was collected 1 week before extermination, with additional samples after the exterminations at approximately 2, 6, and 12 months after the first sample. Self-reported problems with cockroaches were collected at baseline and after 12 months of follow-up in both the intervention and control group. Results: The geometric mean kitchen level of Bla g 1 decreased at 2 months (33.6 U/g) relative to preextermination levels (68.7 U/g, P < .05). The percent of kitchens with over 8 U/g of Bla g 1 followed a similar pattern, but only the decrease from preextermination to 6-month levels was significant (86.8% vs 64.3%, P < .05). By the 12-month visit, the allergen burden had returned to or exceeded baseline levels. Except for an increase in the bedroom at 2 months (8.9 U/g vs 11.1 U/g, P < .05), no other significant change was seen. Only about 50% of the families followed the cleaning instructions; no greater effect was found in these homes. Self-reported problems with cockroaches showed no difference between the intervention and control group after 1 year of follow-up. Conclusions: Despite a significant, but short-lived, decrease the cockroach allergen burden remained well above levels pre-viously found to be clinically significant.
KW - Bla g 1
KW - Cockroach
KW - Intervention
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U2 - 10.1016/s0091-6749(99)70477-x
DO - 10.1016/s0091-6749(99)70477-x
M3 - Article
C2 - 10069886
AN - SCOPUS:0033044885
SN - 0091-6749
VL - 103
SP - 501
EP - 506
JO - Journal of Allergy and Clinical Immunology
JF - Journal of Allergy and Clinical Immunology
IS - 3 II
ER -