Within 11 kms downwind fallout would result in a dose of 1500 rads in the open, or an average dose of 300 rads, for PF5. Death rates for children would be significantly higher. The immediate effects of fallout would extend over a far wider area. These calculations only show the fatalities within the initial 12 week period. There would be many more long term fatalities from cancers resulting from exposure to radiation.
Children are particularly vulnerable to the effects of radiation, especially infants.
The death toll within 12 weeks would include around 30,000 children. Sakue Shimohira was close to the epicentre of the Nagasaki bomb when she was a schoolgirl. The effects of the explosion would go beyond the immediate human casualties. The experience of Hiroshima and Nagasaki shows that schools, hospitals and churches would all be destroyed. The overall effect of the total destruction of property, physical injuries, radiation exposure and psychological damage are beyond comprehension.