IL10 and anemia: While severe anaemia is an important cause of death in P. chabaudi infection of several strains of mice [29, 30], anaemia peaks in both IL-10−/− and WT mice at day 10 post-infection [25], and not during the time frame when most IL-10−/− animals are succumbing to infection (days 7–9 post-infection, Additional file 1).