The actual term Expiration Date refers to the last date a food should be eaten or used. Last means last -- proceed at your own risk. Other, more commonly spotted terms are:  1 Sell by date. 2  The labeling sell by tells the store how long to display the product for sale. 3  You should buy the product before the date expires. 4  This is basically a guide for the retailer, so the store knows when to pull the item.
When an animal or person is infected with Yersinia pestis, the bacteria affect the lymph system, causing the characteristic symptoms. If bubonic plague is left untreated, plague bacteria can quickly multiply in the bloodstream, causing septicemic plague. The bacteria could also progress to the lungs, causing pneumonic plague.
Usually, the bacteria that causes the bubonic plague is contracted when someone is bitten by an infected flea or rodent. In rare cases, it is possible for a piece of contaminated clothing or other material used by an infected person to transmit bacteria through a cut or other opening in your skin and infect you.ithin two to six days of exposure to the bacteria that causes the bubonic plague, symptoms may develop, such as: 1  Headache. 2  Chills. 3  Fever. 4  Weakness. 5  Swollen, tender lymph glands (called buboes, hence the name bubonic).