Vaccination coverage: Proportion of children receiving globally recommended vaccines. WHO

Vaccination lag: Delays in the immunization schedule of the infant or child. UNICEF

Vaccine-preventable diseases: Diseases that can be prevented through immunization by vaccines such as cervical cancer, diphtheria, hepatitis B, measles, parotitis, whooping cough, pneumonia, polio, diarrheal diseases due to rotavirus, rubella, and tetanus. WHO

Vaccines: Preparation destined to generate immunity against a disease by stimulating the production of antibodies. The most common method of administering vaccines is by injection, but they are also administered by nasal or oral spray. WHO

Vector diseases: Infectious diseases that transmit live organisms or vectors, between people, or from animals to people. WHO

Victims of crime or abuse of power: Persons who, individually or collectively, have suffered harm, physical or mental injury, emotional suffering, financial loss or substantial impairment of their rights, as a result of acts or omissions of States. OHCHR

Victims of migrant trafficking: Migrants who are victims of the facilitation of illegal entry into a State of which they are not nationals or permanent residents, by persons who gain financial or material benefit from it. UNODC

Victims of modern slavery: People over whom property rights are exercised, with capture, acquisition, or assignment for sale or exchange. It includes debt bondage or law, custom or agreement to live and work for another person and to provide paid or free services to that person without the freedom to change their status; as well as the marriage of a woman for money, assignment or inheritance to a third party, exploitation of children or young people or their labor and forced labor. ILO

Victims of trafficking: Persons, especially women and children, who are victims of recruitment, transportation, transfer, harboring or receipt, by threat or use of force, other forms of coercion, abduction, fraud, deception, abuse of power, vulnerability or the giving or receiving of payments or benefits, for exploitation, which shall include, at a minimum, the exploitation of the prostitution of others or other forms of sexual exploitation, forced labor or services, slavery or practices similar to slavery, servitude or the removal of organs. UN

Violence: Intentional use of physical force or threat that is very likely to result in trauma, psychological harm, developmental problems or death. WHO

Violence against women: Any act of gender-based violence that results in, or is likely to result in, physical, sexual, or psychological harm to women, including threats of such acts, coercion, or arbitrary deprivation of liberty, whether occurring in public or private life. WHO

Vitamins: Organic substances found in food of animal or plant origin. Important vitamins are A, D, E, K, and C, as well as thiamine, riboflavin, niacin, vitamin B6, folate, vitamin B12, pantothenic, and biotin. FAO

Vulnerability: Exposure to risk and lack of capacity to deal with the consequences that can increase in a crisis, emergency, disaster, or conflict. As vulnerability increases, so does the risk of a negative outcome. IFRC

Vulnerable groups: Sectors of society more likely than other groups to be subjected to discriminatory practices, violence, natural or environmental disasters, or economic hardship. IOM

Vulnerable persons: People with physical, mental or social disadvantages who may be unable to meet their basic needs and therefore may require specific assistance. REFWORLD