Diphtheria: Vaccine-preventable infection caused by Corynebacterium Diphtheriae. WHO

Diphtheria, Tetanus and Pertussis Vaccine (DTP): It contains diphtheria and tetanus toxoids, as well as protein fragments from the bacterium Bordetella pertussis, which causes pertussis. WHO

Disasters: Situations of serious disruption of the functioning of a community or society due to catastrophic events that exceed the capacities and resources to deal with the situation. UN SPIDER

Discrimination: Any distinction, exclusion, restriction or preference or other differential treatment, whether formal or practical, which has the purpose or effect of nullifying or impairing the recognition, enjoyment or exercise, on an equal footing, of human rights. EU

Displaced: Individuals or groups of individuals fleeing their homes or countries due to persecution, widespread violence, massive human rights violations, armed conflict or other such situations. IOM

Do No Harm Principle: Principle of humanitarian action that means avoiding the generation or exacerbation of disparities and discrimination in the affected population, environmental degradation, and conflicts in the affected population. In addition, humanitarian action must not damage or reduce local capacities and must consider the needs of vulnerable groups. OECD

Domestic gas: Efficient, clean, and safe fuel used for domestic purposes such as cooking. WB

Drinking water: Safe and acceptable water for drinking, cooking, domestic, and/or personal hygiene purposes. It must be free from elements that may threaten health, with acceptable color, odor, and taste. OHCHR

Drinking water quality: Water suitable for personal or domestic use in healthy conditions, free from microorganisms or substances that may constitute a threat to health. WHO

Drought: Absence of water for an extended time, whether it is a season, a year, or several years. Lack of rain results in insufficient water supply for humans, animals, and plants. IFRC