The report contains a series of specific case studies. In one of them, more than 700 voles infected with plague were found in the Kan-Nan district of China in April 1952, including on rooftops and in haystacks, soon after a US aircraft had been seen passing overhead. In another, from the following month, a young woman is said to have found a straw package containing clams on a hillside close to Dai-Dong, North Korea. She took the shells home and cooked them; by the end of the following day, both the woman and her husband were dead from cholera. A search of the hillside, close to a reservoir, turned up several more packages of the infected clams. The Commission stated its belief that the aircraft that had been heard circling before the packages were found had been attempting to drop the clams into the reservoir to infect it. The Commission pointed out that some of the species of insects found during the conflict had never been seen in this part of Asia before, and certainly not in such huge concentrations and at unseasonable times of the year; the illnesses that they brought with them were often equally unheard of.