<prompt> About Helicobacter pylori, all are true except:Is a Gram -ve spiral bacteriaUncommon in undeveloping Asian countriesUrea breath test veAssociated with duodenal ulcer  <response>: Ans is b i.e., Uncommon in undeveloping Asian countries Ref: Harrison, 17the, p.946,19the, p. 1038; Ananthanarayan, 9the, p. 400Approximately 85 of developing countries are affected by H. pylori. 