A nationwide study of indoor and outdoor environments in allergen avoidance and conventional daycare centers in Sweden

Bröms, Kristina; Svärdsudd, Kurt; Sundelin, Claes; Norbäck, Dan

doi:10.1111/j.1600-0668.2005.00420.x

Cited by 19 publications

(19 citation statements)

References 51 publications

(70 reference statements)

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“…Thus, of all the public facilities examined in our study, children daycare centers seem be the most risky workplace in terms of developing and/or exacerbating respiratory allergic diseases. This notion is supported by several studies that have suggested there is a causal relationship between biological allergen exposure at children daycare centers and the development of respiratory allergic diseases in child attendants 8,32) .…”

Section: Discussionsupporting

confidence: 68%

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Public Facility Workers' Immunological Characteristics Involved with Development of Respiratory Allergic Diseases in Korea

et al. 2010

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Section: Discussionsupporting

confidence: 68%

“…However, most of the studies mentioned focused on the impact of exposure to biological contaminants on the users of public facilities, especially children and the elderly [7][8][9] . Much less is understood about the effects of biological contaminants on the health of the employees working at these public facilities.…”

mentioning

confidence: 99%

Public Facility Workers' Immunological Characteristics Involved with Development of Respiratory Allergic Diseases in Korea

et al. 2010

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“…The operations, set of rules, and fees are the same as for ordinary day-care centres (ODC) with the exception that AADCs give priority to children with asthma or allergies, but accept other children as well, space permitting. As shown in a previous report all AADCs had strict regulations to avoid pet, smoking, perfume, and dust exposure [18]. The ODCs usually had no such regulations.…”

Section: Methodsmentioning

confidence: 99%

Prevalence and co-occurrence of parentally reported possible asthma and allergic manifestations in pre-school children

et al. 2013

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BackgroundThe aim of this study was to make an in-depth analysis of the prevalence and co-occurrence in pre-school children of possible asthma and atopic manifestations.MethodsIn Sweden 74%-84% of preschool children, depending on age, attend municipality organised day-care centres. Parents of 5,886 children 1–6 years of age, sampled from day-care centres in 62 municipalities all over Sweden, responded to a postal questionnaire regarding symptoms indicating prevalent possible asthma, allergic rhinitis, eczema, and food, furred pet and pollen allergy and other data in their children. Possible asthma was defined as any of the four criteria wheezing four times or more during the last year, physician diagnosis and current wheezing, ever had asthma and current wheezing, and current use of inhalation steroids, all based on questionnaire responses.ResultsThe overall prevalence of possible asthma was 8.9%, of eczema 21.7%, of rhinitis 8.1%, and of food allergy 6.6%. There was a highly significant co-occurrence between possible asthma and all atopic manifestations, 35.7% having any of the manifestations. Presence of pet allergy was the manifestation showing the closest co-occurrence with presence of possible asthma, presence of pollen allergy with presence of rhinitis, and presence of food allergy with presence of eczema. Assessed from plots of age-specific prevalence of possible asthma, rhinitis, eczema and food allergy, the prevalence of all manifestations increased from one to three years of age and then decreased, except for rhinitis where the prevalence increased until six years of age, indicating no specific ordered sequence.ConclusionsParentally reported possible asthma, eczema and food allergy had a curvilinear prevalence course across age with a maximum at age 3, while rhinitis prevalence increased consistently with age. Co-occurrence between possible asthma and atopic manifestations was common, and some combinations were more common than others, but there was no evidence of a specific ordered onset sequence.

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“…Exposure to the low levels causes merely that the time to develop the allergic reaction is longer, while the allergens continue to be a potential risk to sensitive children's health [11,24,25]. The level of allergens in kindergartens is determined by a number of factors, the best described of which are: geographic-climatic conditions, season, technical condition of the building, microclimate of rooms, type of ventilation, equipment of rooms, intensity and effectiveness of cleaning and tidying up, as well as the presence of fur-bearing pets in dwellings of the kindergartens' staff and children [1,6,26,27].…”

Section: Discussionmentioning

confidence: 99%

Indoor allergens in settled dust from kindergartens in city of Łódź, Poland

Cyprowski¹,

Buczyńska²,

Szadkowska-Stańczyk³

2013

International Journal of Occupational Medicine and Environmental Health

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Objectives:The main objective of the study was to determine the levels of house dust mite (Der p1), dog (Can f1), cat (Fel d1) and cockroach (Bla g2) allergens in kindergartens localized in an urban agglomeration. Material and Methods:A quantitative analysis of allergens was carried out in settled dust samples collected by vacuuming the floor surface in three kindergartens (N = 84) and children's clothing (N = 36). The samples were collected in springsummer and autumn-winter periods as well as at the beginning and end of the week. The allergen dust concentration was determined by enzyme-linked immunoenzymatic assay (ELISA). Results: The mean geometric concentrations (±geomet-ric standard deviations) of allergens Der p1, Can f1, Fel d1 and Bla g2 determined in kindergartens were: 0.02±3.21 μg/g of dust; 0.97±4.49 μg/g of dust; 0.30±4.43 μg/g of dust and 0.01±3.08 μg/g of dust, respectively. Younger classrooms (children aged from 3 to 4 years) were characterized by almost twice higher mean concentration of allergen Fel d1, as compared to older classrooms (children aged from 5 to 6 years) (p < 0.05). A significant impact of seasonality on the level of dog allergen Can f1 was found (p < 0.05). No significant weekly variation was found in average concentrations of the allergens. Children who had a dog and/or cat at home were characterized by high concentrations of allergens Can f1 and Fel d1 on their clothes (59.2±5.39 μg Can f1/g of dust; 3.63±1.47 μg Fel d1/g of dust), significantly higher than concentrations of allergens in children who did not have any pets (p < 0.001). Conclusions: Special attention should be paid to keeping the kindergarten rooms tidy and clean and to an appropriate choice of furnishings and fittings which would prevent the proliferation of the house dust mite and accumulation of allergens.

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A nationwide study of indoor and outdoor environments in allergen avoidance and conventional daycare centers in Sweden

Cited by 19 publications

References 51 publications

Public Facility Workers' Immunological Characteristics Involved with Development of Respiratory Allergic Diseases in Korea

Public Facility Workers' Immunological Characteristics Involved with Development of Respiratory Allergic Diseases in Korea

Prevalence and co-occurrence of parentally reported possible asthma and allergic manifestations in pre-school children

Indoor allergens in settled dust from kindergartens in city of Łódź, Poland

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