When people hear about ‘algorithmic decision-making’, they typically think of a computer system and the data sets it calculates. In reality, all algorithmic decisions are made in collaboration with humans: it is us who create them, evaluate them, follow their outcomes or deviate from them. Van Voorst’s project is an anthropological study of the collaboration between humans and algorithmic systems in the field of global public health – a field of unprecedented growth in datafication and automation. In six country cases, the project will look at how doctors, programmers and algorithms make decisions together, for example in the fields of DNA genetic research or preventive health care.