CXCL8 and infection: Unlike some of these previous trials of this nature which focused on various aspects of the immune response, this current trial predominantly focused on a localized IL-8 response at the site of infection upon infusion with viable and heat-killed cells present in emulsion-based formulations, as a previous trial had indicated that this was the main cytokine involved in evoking an immune response and resolving the infection (Beecher et al., 2009).