Thy Thanh

A team of European researchers has suggested that passive exposure to bleach in the home could increase the frequency of respiratory and other infections among dia chi ban cay an xoaschool-age children.
A collection of different cleaning products.
Bleach is widely used in homes, schools and other public buildings across the world as a cleaning product.

The study, published in Occupational & Environmental Medicine, examined the effects of exposure to bleach in the home among children from schools in Finland, Spain and the Netherlands.

Previous studies have suggested the use of cleaning agents in the home may increase the risk of respiratory infections and wheezing during the first year of life, and airway inflammation at school age.

Bleach is a cleaning agent that is used widely across the world. According to the researchers, a cross-sectional study has previously reported that children at school age living in a house where bleach is used had an increased risk of recurrent bronchitis, although also received some protection against asthma and allergies.

For the new study, the researchers examined the impact of bleach use in the homes of 9,102 children aged 6-12 attending 19 schools in Utrecht, The Netherlands, 18 schools in Barcelona, Spain, and 17 schools located in Eastern and Central Finland.

The parents of participating children completed questionnaires detailing whether they used bleach to clean their homes once a week and the amount of times their children had developed the following infections over the course of the past 12 months:

Parents had the choice of reporting infection frequency as "never," "once," "twice" or "more than three times."

Bleach use varied in the countries participating in the study. While 72% of respondents from Spain reported using bleach, only 7% of those from Finland did. cay an xoa chua benh gan Additionally, all of the Spanish schools involved with the study were cleaned with bleach whereas none of the Finnish schools were.
Effects reported in the study are a public health concern, authors state

After adjusting for other potentially influential factors such as passive smoking, household mold and the use of bleach to clean school premises, the researchers found th