Chernobyl fallout and perinatal mortality in England and Wales.

Previous studies have concluded that radioactive fallout from Chernobyl may have caused an increase in perinatal mortality in West Germany and the U.S.A. The existence of marked geographical variations in contamination from Chernobyl in England and Wales provides an opportunity to investigate this question further by means of a geographical study. The highest doses from Chernobyl in England and Wales were in the counties of Cumbria, Clwyd and Gwynedd where there was heavy rainfall during the passage of the radioactive cloud. However, perinatal mortality in these areas did not rise relative to the national average in the year following Chernobyl. This negative finding was confirmed by a wider study of 14 counties grouped in accordance with levels of radioactive contamination of local milk. It is concluded that this study provides no evidence that radiation from Chernobyl caused a rise in perinatal mortality in England and Wales.