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.
Infection with Helicobacter pylori (H. pylori) Infection with H. pylori is the cause in about 19 in 20 cases of duodenal ulcer. More than a quarter of people in the UK become infected with H. pylori at some stage in their lives. Once you are infected, unless treated, the infection usually stays for the rest of your life.