If one is talking about interstate business, a company that is in one state provides its products and services to a customer in another state or several states. Intrastate. Intrastate refers to anything that pertains to a single state and does not require crossing over the boundaries of a single state.
H. pylori was first discovered in the stomachs of patients with gastritis and ulcers in 1982 by Drs. Barry Marshall and Robin Warren of Perth, Australia. At the time, the conventional thinking was that no bacterium could live in the acid environment of the human stomach.
A common kind of bacteria called Helicobacter pylori, or H. pylori, can cause an infection in your stomach that sometimes leads to ulcers. It also can raise your risk of stomach cancer. H. pylori is a very common infection: At least half the people in the world get it at some point, usually in childhood.