Science and technology

Associated Press
FILE - This undated file image released by the British Health Protection Agency shows an electron microscope image of a coronavirus, part of a family of viruses that cause ailments including the common cold and SARS, which was first identified last year in the Middle East. The Ministry of Health in Saudi Arabia told world health officials that two health care workers became ill this month after being exposed to patients with the a deadly new respiratory virus related to SARS. One is critically ill. (AP Photo/Health Protection Agency, File)

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