What is the experience from previous mass gathering events? Lessons for Zika virus and the Olympics 2016.

All previous experiences from different mass gathering show that vaccine preventable diseases is the most important infections like influemza, hepatitis A, polio and meningitis. Three mass gathering held in Africa during the Ebola outbreak accepted participants from West Africa and was able to handle the theoretical risk without any incident. Therefore we believe that the Olympc games in Rio de Janeiro should not be canceled.

Histocompatibility alloantigens in psoriasis and psoriatic arthritis. Evidence for the influence of multiple genes in the major histocompatibility complex.

The frequency of HLA-A, B, and Cw antigens as well as the antigens expressed preferentially on B cells and monocytes (DRw and Ia-like) was examined in a normal population and two related disease populations, psoriasis and psoriatic arthritis. HLA antigens distinguishing the two disease populations were found. Psoriatic patients demonstrated an increase in frequency of HLA-A1, B17, and B13.