Proplyene Glycol is an additive that is present in many dog foods to help with moisture content. In dog food it is an acceptable ingredient that the FDA considers as generally safe. If propylene glycol was present in high levels in dog food it could be toxic, however. Propylene Glycol is used in food to accomplish several things: 1  To absorb extra water and help keep food moist.  As a solvent for colors and flavors in the food.
What is Diphtheria? Diphtheria is caused by the bacterium Corynebacterium diphtheriae. This germ produces a toxin that can harm or destroy human body tissues and organs. One type of diphtheria affects the throat and sometimes the tonsils. Another type, more common in the tropics, causes ulcers on the skin. Diphtheria affects people of all ages, but most often it strikes unimmunized children.
Transmission and Symptoms. Diphtheria is transmitted from person to person, usually via respiratory droplets. The infection is caused by bacteria called Corynebacterium diphtheriae. An infected person, unless treated with antibiotics, is infectious for two to three weeks.Symptoms include sore throat, loss of appetite, and fever.iphtheria once was a major cause of illness and death among children. The United States recorded 206,000 cases of diphtheria in 1921, resulting in 15,520 deaths. Diphtheria death rates range from about 20% for those under age five and over age 40, to 5-10% for those aged 5-40 years.