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.
Rats can carry fleas that may be infected with the bacteria that cause bubonic plague. Headaches are common in people with bubonic plague. Bubonic plague manifests in the form of swollen lymph nodes. Bubonic Plague causes large bruises to appear. Exposure to infected rodents like the prairie dog can cause transmission of the bubonic plague.
Within 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).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).