At least 1.4 million households had gone without water since the quake struck and some 1.9 million households were without electricity.
The Japanese media have drawn attention to a quake of magnitude 6.6 on the far side of the country, between Nagano and Niigata prefectures, and to a quake of magnitude 6.1 in Shizuoka prefecture, both within days of the main quake.
More than 1, 500 people were killed again in 1997 when an earthquake struck the Ghaen region, while in Golbaf, a strong quake which had caused 1, 500 deaths in 1981 caused just five in 1991.
Iran's Fars news agency said the quake measured at 6.1 magnitude.
CNN: State TV: 4 dead after quake hits Iran, near nuclear site
Hundreds of thousands of more housing units are under construction, and the government has helped nearly 1.3 million quake victims find new jobs, Yu said.
Hundreds of thousands of more housing units were also under construction, and the government has helped nearly 1.3 million quake victims find new jobs, Yu said.
Earthquake experts from the British Geological Survey said that the 1.5 magnitude quake last week was similar to a 2.3 earthquake in April in the same area and that both may be linked to the experimental fracking for shale gas at Preese Hall on the Fylde coast.
Iran's seismological centre in Bushehr province, linked to Tehran University, registered the quake at a magnitude of 6.1.
One Haitian man approached U.N. workers at the World Food Programme warehouse, which was already helping feed 1 million people before the quake.
The quake killed 235 people and injured about 1, 000 others.
The quake led many to revive their memories of 2004, when a 9.1-magnitude earthquake spawned a massive tsunami that killed 230, 000 people in 12 countries.
About 10, 000 houses and nearly 1, 000 commercial buildings will have to be demolished as a result of the devastating quake in February.
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