Chinese workers catch field mice for test in Yiyang City near Dongting Lake, Central China's Hunan Province in July 2007. People living in communities surrounding a Dongting Lake have been overrun by field mice after floodwaters drove the rodents out of islands on the lake. An estimated 2 billion mice are ravaging crops in 22 counties around the lake, and authorities were rushing to construct walls and ditches to keep the rodents out. [Hu Hua/Rednet.cn]

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