Heralded as ?the mother of all pandemics,? in 1918, the Spanish flu killed some 50 million people. This was the deadliest event in recorded history, which started when an influenza virus that was prominent in birds (known as ?avian flu?) was passed to humans. And now, scientists from the University of Wisconsin-Madison have created an even deadlier influenza virus that is similar to the 1918 strain.
Office of Strategic Communication