100 years of HIV in humans HIV has existed among human populations for about 100 years, decades earlier than previously believed, according to a report published Wednesday in the journal Nature, the Los Angeles Times reports . HIV/AIDS was not known until 1981 formally, and scientists previously approximated its origin at around 1930. However, the new research, led by Michael Worobey of the University of Arizona, found the foundation of HIV to end up being between 1884 and 1924, with a more focused estimate at 1908 prescription medication . Worobey stated that the new result is not a monumental shift, but it means the virus was circulating under our radar even longer than we understood .

Listeria bacteria is mostly entirely on deli meats, soft seafood and cheeses, according to the Centers for Disease Avoidance and Control. No illnesses have already been reported linked to this current recall. Products include poultry, ham, potato, and macaroni salads, salsas and slaws under brands including Cobble Street Market, Cross Valley Farms, Dillon’s, Miller’s, Target, 7-11, Reser’s Good Foods, Walmart and Yoder’s. The recall totals about 23,000 pounds of food, based on the U.S. Section of Agriculture’s Food Safety and Inspection Service. Expiration dates range from 10/23/13 to 3/17/14 – – a full list of products and UPC codes can be found on Reser’s website.