Washington: Scientists have found that dust from homes with dogs appears to protect against an infection with a common respiratory virus linked to the childhood asthma, a discovery they say could lead to new therapies to reduce asthma among children.In experiments on mice, researchers from the University of California in San Francisco found that the animals fed with house dust from homes that have dogs were protected from a childhood airway infectious agent, called respiratory syncytial virus (RSV). "RSV infection is common in infants and can manifest as mild to severe respiratory symptoms. Severe infection in infancy is associated with a higher risk of developing childhood asthma," said Kei Fujimura, a researcher on the study. In the study Fujimura and her colleagues compared three groups of animals: Mice fed house dust from homes with dogs before being infected with RSV, mice infected with RSV without exposure to dust and a control group of mice not infected with RSV.
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