The survey found that the frequency of acute symptoms such as hair loss and diarrhea was 11.7 times higher in the group (21 people) exposed to dust particles while operating within a 2-kilometer radius of the bomb’s hypocenter than those who weren’t exposed at locations 2 kilometers or more away (22 people, including some unknown). Similarly, the frequency of acute symptoms was also found to be 5.5 times higher among those who were exposed to dust particles more than 2 kilometers away from ground zero (9 people) than those who weren’t exposed. In addition, there were more cases of people developing cancer and leukemia among the groups exposed to the dust particles.
Commenting on these results, Otaki says, “Although the sample size is small, the conditions of the subjects such as age, health conditions, and the length of relief operation time are almost the same, meaning the data is very reliable.”
In addition, upon re-examining data released by the foundation in 2001 — which showed the relationship between estimated radiation dose and the frequency of chromosomal abnormalities in 3,042 atomic bomb victims — it has become clear that the radiation dose received by victims who were indoors is possibly 30 percent higher than initially thought. Based on this, the team of researchers has concluded that, “It is very likely that people developed chromosomal abnormalities after being exposed to radiation by inhaling dust particles upon going back into damaged buildings.”
Extent of A-bomb dust inhalation in 1945 underestimated: researchers https://mainichi.jp/english/articles/20170731/p2a/00m/0na/004000cJuly 31, 2017 (Mainichi Japan)HIROSHIMA