Under the umbrella of the global Working Group on Public-Private Mix (PPM) for TB Care and Prevention, WHO’s Global TB Programme and partners have been assisting countries to enhance collaboration between national TB programmes (NTPs) and diverse public, voluntary, corporate and private health care providers for TB care and control in different settings. The PPM Working Group members include national TB programme managers, policy makers, representatives from the private sector, academia, field experts, international technical partners and development agencies. The WHO provides the Secretariat for the Working Group, organizes periodic global meetings of the group and leads the development and promotion of global policies, strategies and tools related to PPM expansion.