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YUSHU - A total of 1,350 aftershocks have been detected in Yushu Tibetan Autonomous Prefecture, Qinghai Province, after a 7.1-magnitude earthquake hit the region on April 14, said seismological authorities.
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Of the 13 aftershocks, the biggest one was a 6.3-magnitude tremor that jolted Yushu at 9:25 a.m. on April 14, Qinghai Provincial Seismological Bureau said in a statement.
In addition, three aftershocks were measured between 4.0-4.9 magnitude and nine between 3.0-3.9 magnitude.
Both the frequency and severity of aftershocks were on a downward trend, it said.
The quake has left at least 2,183 dead, 84 missing and 12,135 injured, including 1,434 seriously hurt, as of 5 p.m. Wednesday.