The 1950s were the heyday of mass campaigns against specific diseases in the developing world. These campaigns were based on the optimistic assumption that it was possible to control and even eradicate disease through the effective deployment of appropriate technologies. In other words, this was the golden age of the “magic bullet”. Judging from demographic statistics, this approach seemed to work, and countries in Asia and Africa saw a significant decline in mortality during the decade. In his study of international health in South and Southeast Asia, Sunil Amrith—although recognizing that the public health campaigns were in one sense “tremendously successful” (p. 150)—aims to challenge the notion of the well oiled and smoothly running operation. Rather, the campaigns were fragile enterprises dependent on local circumstances and historical contingencies. Thus, in a central passage Amrith suggests that “when looked at too closely, the modernist image [of the campaigns] fragments into so many broken-down vans, fears of ‘resistance’, recalcitrant mosquitoes, and plans gone wrong” (p. 148). While many books in the history of medicine conveniently confine themselves to one disease and/or one country, Amrith courageously sets out to substantiate his argument through analyses covering public health efforts in a broad sense over the area corresponding to the South East Asian Region of the World Health Organization (a somewhat artificial unit created because Pakistan and India could not be in the same region). He begins in the 1930s, where he identifies a discourse on rural hygiene emerging from the peripheries of Asian empires and culminating with the 1937 Bandung conference. This was a discourse based on a broad “social” approach to medicine. The Second World War, however, changed this. The discovery of DDT and antibiotic drugs against tuberculosis, on the one hand, and the logistics of military medicine, on the other, placed, Amrith argues, “‘the magic bullet’ at the heart of international medicine” (p. 53). Consequently, after the war a more narrow bio-medical perspective on public health dominated “the political culture of international health”. This political culture was first and foremost embodied in the WHO. Apparently, the new approach did not depend on local circumstances; nor it did require any active cooperation from local populations. Seemingly, international health had become “universal”. Having taken the reader so far in the first four chapters of the book, Amrith looks more closely at the campaigns. He finds a fragile medical infrastructure, improvisations from local employees, resistance against BCG-vaccination from political leaders in South India, and problems in creating rational, compliant patients for long-term medication. Finally, he of course finds the looming fear of the emerging resistance to DDT in mosquitoes. More than anything else, resistance to this insecticide symbolizes the failure of the “magic bullet”. By 1965 faith in the medical campaigns was fading, while concerns about the population explosion received more and more attention. There can be no doubt that Decolonizing international health is a suggestive and imaginative contribution to our understanding of international health at a crucial juncture, not least because it takes such a bold and broad perspective. These virtues come, however, at a cost. First, the narrative in some of the chapters tends to be confused. Chapter two, for instance, begins with an account of the developments in military medicine during the Second World War which paved the way for the narrow bio-medical approach. It then considers the report of the Indian Bhore Committee, which employed a much more social approach. The chapter proceeds to an account of United Nations Relief and Rehabilitation Administration and ends in Bengal during the famine of 1943. This seems to be a wide and somewhat heterogeneous range of topics to cover within just twenty-five pages. Second, specific issues could have been analysed in more depth. While most would agree with Amrith's suggestion that employees of the campaigns were not “faceless technicians in a Fordist production line of health” (p. 126), the convincing in-depth case study to substantiate this argument is lacking. It might be true that the high modernist image of the mass campaign disappears when looked at “too closely”, but Amrith does not—after all—come that close. Decolonizing international health is, nevertheless, an immensely valuable work because it should inspire others to conduct a wide range of in-depth microhistorical studies of public health interventions in Asia. Such studies might support or repudiate Amrith's line of argument, but it is a very stimulating book to have on the shelf.