1.   Immaturity seems to play an important part in the subsequent development of respiratory illness in childhood.

2.   The association between length of gestation and respiratory illness was greatest for symptoms of wheeze most days.

3.   Amounts of toxic gases in our cities have already reached unacceptable levels and this is showing up in the big increases in respiratory illnesses.

4.   Effects have included widespread respiratory illnesses and the closure of airports due to poor visibility.

5.   The decision follows years of anxiety about the high levels of respiratory illnesses in the area.

6.   The guidelines are in response to what BAAF claims is overwhelming evidence that babies and children with respiratory illnesses are particularly at risk from passive smoking.

7.   Among the viruses ruled out were recently discovered strains of the Hanta virus, which has caused acute respiratory illness in the United States.

8.   And both researchers still complain of lingering effects, including an inability to exercise strenuously without having shortness of breath and the onset of respiratory illnesses.