CHAI began work in Zimbabwe in 2006 and has closely collaborated with the government and other partners to transform the health system to offer innovative, cost-effective, and data-driven sustainable solutions to address the most urgent health needs. We have helped the government to rapidly improve treatment and care of HIV and tuberculosis (TB) for adults and children, increased efforts to prevent transmission of HIV from mothers to their babies, and are accelerating access to the newest and best HIV treatments and tools for diagnosis and prevention.