ScienceDaily Posted February 8, 2013 Share Posted February 8, 2013 It is generally a mystery how new diseases arise and how the pathogens that cause them first enter countries. However, clues may come from examination of specimens from similar outbreaks. This approach has recently been taken by scientists in order to trace the origin of the virus that caused a sudden decrease in the number of blackbirds in Vienna in 2001. Read the full article on ScienceDaily Link to comment Share on other sites More sharing options...
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