Urban slum dwellers—especially in emerging-economy countries—are often poor, live in squalor, and suffer unnecessarily from disease, disability, premature death, and reduced life expectancy. Yet living in a city can and should be healthy. Slum Health exposes how and why slums can be unhealthy; reveals that not all slums are equal in terms of the hazards and health issues faced by residents; and suggests how slum dwellers, scientists, and social movements can come together to make slum life safer, more just, and healthier. Editors Jason Corburn and Lee Riley argue that valuing both new biologic and “street” science—professional and lay knowledge—is crucial for improving the well-being of the millions of urban poor living in slums.

Urban slum dwellersÑespecially in emerging-economy countriesÑare often poor, live in squalor, and suffer unnecessarily from disease, disability, premature death, and reduced life expectancy. Yet living in a city can and should be healthy.ÊSlum HealthÊexposes how and why slums can be unhealthy; reveals that not all slums are equal in terms of the hazards and health issues faced by residents; and suggests how slum dwellers, scientists, and social movements can come together to make slum life safer, more just, and healthier. Editors Jason Corburn and Lee Riley argue that valuing both new biologic and ÒstreetÓ scienceÑprofessional and lay knowledgeÑis crucial for improving the well-being of the millions of urban poor living in slums.

1.1 General Background The word ‘slum’ has a slangy connotation in British society from where this word is thought to be originated. In the eastern end of London, this word means ‘room,’ and it evolved over time to mean ‘back slum’ giving the sense of ‘back allay, street of poor people’ (Etymological Dictionary). The Slum is variously named, often interchangeably used, in different parts of the globe viz. shanty town, favela, rookery, gecekondu, skid row, barrio, ghetto, bidonville, taudis, bandas de miseria, barrio marginal, morro, loteamento, barraca, musseque, tugurio, solares, mudun safi, karyan, medina achouaia, brarek, ishash, galoos, tanake, baladi, trushebi, chalis, katras, zopadpattis, bustee, estero, looban, dagatan, umjondolo, watta, udukku, and chereka bete (UN-Habitat, 2003). Below are some of the definitions of slum given by some eminent social scientists working in the field of slums. Merrium Websters’ American Dictionary defines slums as “a densely populated usually urban area marked by crowding, dirty run-down housing, poverty, and social disorganization” whereas the Oxford Dictionary defines slums to be a “squalid and overcrowded urban street or district inhabited by very poor people” and it also tells that the slums consists of type of “houses or buildings unfit for human habitation”. As per, the Cambridge online dictionary, a slumis “a very poor and crowded area, especially of a city” in which the living conditions are “untidy or dirty”. Colin's dictionary states that “a slumis an area of a city where living conditions are very bad and where the houses are in bad condition” and it also lists some of its synonyms like hovel, ghetto, shanty, etc.

The urban built environment is a prime setting for microbial transmission, because just as cities serve as hubs for migration and international travel, components of the urban built environment serve as hubs that drive the transmission of infectious disease pathogens. The risk of infectious diseases for many people living in slums is further compounded by their poverty and their surrounding physical and social environment, which is often overcrowded, is prone to physical hazards, and lacks adequate or secure housing and basic infrastructure, including water, sanitation, or hygiene services. To examine the role of the urban built environment in the emergence and reemergence of infectious diseases that affect human health, the National Academies of Sciences, Engineering, and Medicine planned a public workshop. This publication summarizes the presentations and discussions from the workshop.

Through interdisciplinary and multidisciplinary perspectives, and with an emphasis on exploring patterns as well as distinct and unique conditions across the globe, this collection examines advanced and cutting-edge theoretical and methodological approaches to the study of the health of urban populations. Despite the growing interest in global urban health, there are limited resources available that provide an extensive and advanced exploration into the health of urban populations in a transnational context. This volume offers a high-quality and comprehensive examination of global urban health issues by leading urban health scholars from around the world. The book brings together a multi-disciplinary perspective on urban health, with chapter contributions emphasizing disciplines in the social sciences, construction sciences and medical sciences. The co-editors of the collection come from a number of different disciplinary backgrounds that have been at the forefront of urban health research, including public health, epidemiology, geography, city planning and urban design. The book is intended to be a reference in global urban health for research libraries and faculty collections. It will also be appropriate as a text for university class adoption in upper-division under-graduate courses and above. The proposed volume is extensive and offers enough breadth and depth to enable it to be used for courses emphasizing a U.S., or wider Western perspective, as well as courses on urban health emphasizing a global context.