Key points are not available for this paper at this time.
Hay fever has been described as a "post industrial epidemic, "' and successive morbidity from British general practice suggest that its has continued to increase over the past 30. ) Other evidence suggests a recent increase in the of asthma2 and childhood eczema. 3 This suggests a possible explanation for these trends time.
David P. Strachan (Sat,) studied this question.