There are many humanitarian actors that play a role in a disaster. This module describes many of them and also looks at various coordination models that are used.

This module describes the burden of, and mechanisms of, sanitation and water-related diseases in humanitarian crises. We also illustrate the various strategies and priorities that can be used to reduce outbreaks of those diseases.

Disasters affect livelihoods. This module illustrates how and what livelihoods strategies families use to cope with a crisis. We also describe what food security entails and ways to assess it. We look at various livelihoods support programs that can be used in disaster settings.

This module looks at who is at risk to become malnourished in a disaster context and why that is the case. We will describe various types of malnutrition, the treatment and various preventative actions.

This module examines the patterns of disease in affected populations. We will understand how the changes in population characteristics as well as life styles have changed the nature of the burden of disease populations from that of predominantly communicable to a pattern of non communicable diseases.

Disasters put special strains on the provision of health services as demands increase and resources to meet these needs diminish. The six major components of health services may be each damaged in different ways, and all can require urgent attention. This is all discussed in this module.

In this module we talk about shelter and what it means. We describe how and which shelter solutions contribute towards immediate and longer-term recovery of people affected by disasters.

Many disasters cause populations to be displaced. The module on the protection of displaced populations explores the international protection of individuals in relation to public health, human rights, and international humanitarian law.

The potential for future disasters is great, and each having important public health components. New resources and new approaches will be needed to address these disasters and to help countries to recover economies and livelihoods. This module discusses the challenges and future directions in humanitarian assistance.