PITTSBURGH (AP) - Researchers at the University of Pittsburgh have published more than a century's worth of data on scores of infectious diseases they compiled while putting together computer models and simulations for research.
Professors Donald Burke and William van Panhuis repeatedly dipped into written historical records. They told the Pittsburgh Post-Gazette that they finally decided to digitize weekly reports for more than 87 million individual cases of 56 contagious diseases reported between 1888 and 2011.
The research, dubbed Project Tycho after Danish astronomer Tycho Brahe, was published Wednesday in the New England Journal of Medicine.
Brahe's detailed observations were later used to derive the laws of planetary motion, and Burke and van Panhuis expect their data to be used by other scientists studying infectious diseases.
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After a TRACE of April snow in Philadelphia Wednesday morning, the return of winter is making an unwanted return for most.
Freeze warnings posted for Wednesday night into Thursday AM. Protect sensitive plants!
Expect a slow warm up over the next couple of days.
Thursday High: 54
Friday High: 56
Saturday High: 63
Sunday High: 64