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.
Bubonic plague is one of three types of bacterial infection caused by Yersinia pestis. Three to seven days after exposure to the bacteria flu like symptoms develop. This includes fever, headaches, and vomiting.Swollen and painful lymph nodes occur in the area closest to where the bacteria entered the skin.n the bubonic form of plague, the bacteria enter through the skin through a flea bite and travels via the lymphatics to a lymph node, causing it to swell. Diagnosis is by finding the bacterium in the blood, sputum, or fluid from lymph nodes.