Peter Kelleher is a graduate of Trinity College Dublin. He trained in internal medicine in Dublin and clinical immunology in London and Oxford. His PhD thesis on dendritic cell function in retroviral infection was conducted under the supervision of Professor Stella Knight at the APRG Unit, Imperial College London. Dr Kelleher research interests are in the immunology of HIV-1 infection and primary antibody deficiency and the application of novel immunological technologies to the diagnosis of patients with infectious diseases and immune based disorders. Current research interests include studies evaluating the contribution of HIV-1 specific antibody responses in acquisition of HIV-1 and control of acute HIV infection in high risk men who have sex with men. We also focus on defects in B cell memory may underlie the risks of invasive bacterial disease and impaired bacterial vaccine responses in HIV-1 infection.  The laboratory is the investigation of novel immune defect in patients with primary antibody deficiency. The immunology laboratory is also involved in multi-centre clinical and laboratory based studies European and UK in patient with HIV-1 infection, CVID, complement deficiencies and ventilator associated pneumonia.