Researchers have identified the fungus-like infection that caused the potato blight in Ireland that spread in 1845 and started a famine that killed 1 million people. The ancient DNA of the pathogen was identified using high-tech DNA sequencing. "This strain was different from all the modern strains that we analysed -- most likely it is new to science. We can't be sure but most likely it's gone extinct," said Sophien Kamoun of the Sainsbury Laboratory in the U.K.
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