Lack of homologous protection against Campylobacter jejuni CG8421 in a human challenge model.

Background: Campylobacter jejuni is a common cause of diarrhea and is associated with serious postinfectious sequelae. Although symptomatic and asymptomatic infections are recognized, protective immunity is not well understood. Previous data suggests that interferon γ (IFN-γ) may be associated with protection.

Trypanosoma brucei infection in a HIV positive Ugandan male.

Human African Trypanosomiasis, or African Sleeping Sickness, is a parasitic infection caused by Trypanosoma brucei (gambiense or rhodesiense), and one of the declared neglected tropical diseases. Sleeping sickness has high fatality rates and is a continued threat in several African countries. We present characteristic clinical and microbiologic features of a fatal case of African Sleeping Sickness in an HIV-infected individual.