Leg pain is also frequently a sign of injury, such as the following: Muscle strain is a common injury that happens when the muscle fibers tear as a result of overstretching. It often occurs in the larger muscles, such as the hamstrings, calves, or quadriceps.
medical Definition of superinfection : a second infection superimposed on an earlier one especially by a different microbial agent of exogenous or endogenous origin that is resistant to the treatment used against the first infection
Superpower is a term used to describe a state with a dominant position, which is characterised by its extensive ability to exert influence or project power on a global scale. This is done through the combined-means of economic, military, technological and cultural strength, as well as diplomatic and soft power influence. Traditionally, superpowers are preeminent among the great powers. The term was first applied post World War II to the British Empire, the United States and the Soviet Union. How