Helicobacter pylori has been extensively studied and proven to be the main cause of chronic gastritis and peptic ulcer in the HIV-negative population. Patients with chronic active gastritis have evidence of H pylori infection in over 90% of cases and in 70-100% of those with peptic ulcer disease.

As many as four out of ten HIV positive African-American men could be putting their partners at risk by not using condoms, according to research in the latest UK-based Journal of Advanced Nursing.

Scientists have refuted a longstanding theory of how HIV slowly depletes the body's capacity to fight infection, in new research published today.