Health Disparities
Definition: Health disparities are preventable differences in the burden of disease, injury, violence, or opportunities to achieve optimal health that…
Read DefinitionPublic Health Glossary
Decode complex terminology and master the language of public health.
Health Equity
The state in which everyone has a fair and just opportunity to attain their highest level of health.
Read DefinitionHealth Impact Assessment
Definition: Health Impact Assessment (HIA) is a systematic process that identifies and evaluates the potential health effects of a proposed…
Read DefinitionHealth Information System
Definition: A Health Information System (HIS) is an integrated framework of people, processes, and technology designed to collect, process, store,…
Read DefinitionHealth Promotion
The process of enabling people to increase control over, and to improve, their health.
Read DefinitionHealthcare-Associated Infection
Definition: A Healthcare-Associated Infection (HAI), also known as a nosocomial infection, is an infection acquired by a patient during the…
Read DefinitionHealthy Cities
Definition: Healthy Cities is a World Health Organization (WHO) initiative promoting a comprehensive, long-term approach to public health, recognizing that…
Read DefinitionHerd Immunity
A form of indirect protection from infectious disease that occurs when a sufficient percentage of a population has become immune to an infection.
Read DefinitionHost (Epidemiology)
Definition: In epidemiology, a host is a living organism, typically a human or animal, that harbors an infectious agent under…
Read DefinitionHumanitarian Aid
Definition: Humanitarian aid refers to material and logistical assistance provided to people affected by humanitarian crises, such as natural disasters,…
Read DefinitionImmunization
Definition: Immunization is the process by which an individual's immune system becomes fortified against an agent, typically an infectious disease.…
Read DefinitionImmunocompromised
Definition: An immunocompromised individual has a weakened or impaired immune system, making them more susceptible to infections and severe disease…
Read DefinitionIncidence
The rate of new (or newly diagnosed) cases of a disease. It allows epidemiology to understand the risk of contracting the disease.
Read DefinitionIncubation Period
Definition: The incubation period is the time interval between initial exposure to an infectious agent and the first appearance of…
Read DefinitionIndex Case
Definition: The index case, also known as the primary case, refers to the first identified case of a disease or…
Read DefinitionIndicator
Definition: A public health indicator is a measurable variable that reflects a specific aspect of health, disease, service provision, or…
Read DefinitionInfant Mortality Rate
Definition: The Infant Mortality Rate (IMR) is the number of deaths of infants under one year of age per 1,000…
Read DefinitionInfectious Disease
Definition: Infectious diseases are illnesses caused by pathogenic microorganisms, such as bacteria, viruses, fungi, or parasites, that can be spread…
Read DefinitionInfectivity
Definition: Infectivity is the ability of a pathogen to invade, establish itself, and multiply within a susceptible host, leading to…
Read DefinitionIntervention
Definition: A public health intervention is a planned set of actions or programs designed to improve health outcomes, prevent disease,…
Read DefinitionIsolation
Definition: Isolation is a public health measure that separates individuals who are sick with a contagious disease from healthy people…
Read DefinitionJ-curve (epidemiology)
Definition: A J-curve in epidemiology describes a dose-response relationship where the risk of an outcome (e.g., disease, mortality) is initially…
Read DefinitionJail health services
Definition: Jail health services encompass the comprehensive provision of medical, dental, and mental healthcare to individuals incarcerated within local and…
Read DefinitionJargon (public health)
Definition: Jargon in public health refers to specialized terminology, acronyms, and phrases commonly used by professionals within the field that…
Read DefinitionJaundice
Definition: Jaundice is a yellow discoloration of the skin, mucous membranes, and whites of the eyes (sclera) caused by elevated…
Read DefinitionJiggers (Tunga penetrans)
Definition: Jiggers, caused by the sand flea *Tunga penetrans*, are ectoparasites that burrow into the skin of humans and animals,…
Read DefinitionJob-related stress
Definition: Job-related stress, also known as occupational stress, refers to the harmful physical and emotional responses that occur when the…
Read DefinitionJoint programs (public health)
Definition: Joint programs in public health are collaborative initiatives involving two or more organizations, agencies, or sectors working together to…
Read DefinitionJudgment (public health)
Definition: Judgment in public health refers to the critical ability to make sound, informed decisions and recommendations, often under conditions…
Read DefinitionJustice (social justice in public health)
Definition: Justice, within the context of public health, refers to the ethical principle and practical application of ensuring the fair…
Read DefinitionJuvenile delinquency
Definition: Juvenile delinquency refers to the participation in illegal acts by individuals under the age of legal majority, typically defined…
Read DefinitionK-means clustering
Definition: K-means clustering is an unsupervised machine learning algorithm used to partition a dataset into a pre-defined number of `k`…
Read DefinitionK-nearest neighbors
Definition: K-nearest neighbors (KNN) is a non-parametric, instance-based machine learning algorithm used for both classification and regression tasks. It classifies…
Read DefinitionKAP Survey
Definition: A KAP Survey (Knowledge, Attitudes, Practices) is a quantitative research method used in public health to assess a population's…
Read DefinitionKappa statistic
Definition: The Kappa statistic (Cohen's Kappa) is a robust measure of inter-rater reliability or agreement between two observers, methods, or…
Read DefinitionKaryotype
Definition: A karyotype is an organized profile of a person's chromosomes, arranged in homologous pairs and numbered by size, from…
Read DefinitionKilocalorie
Definition: A kilocalorie (kcal), often colloquially referred to as a "calorie" on food labels, is a unit of energy equal…
Read DefinitionKinetics
Definition: Kinetics, in public health, refers to the study of the rates and mechanisms of processes involving the movement, transformation,…
Read DefinitionKoch\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’s Postulates
Definition: Koch's Postulates are a set of four criteria formulated by Robert Koch to establish a causal relationship between a…
Read DefinitionKruskal-Wallis test
Definition: The Kruskal-Wallis test is a non-parametric statistical method used to determine if there are statistically significant differences between the…
Read DefinitionKurtosis
Definition: Kurtosis is a statistical measure that describes the "tailedness" and "peakedness" of the probability distribution of a dataset. It…
Read DefinitionLatency period
Definition: The latency period, in public health and epidemiology, refers to the time elapsed between an individual's exposure to a…
Read DefinitionLead poisoning
Definition: Lead poisoning, also known as plumbism, is a serious and potentially fatal condition caused by the accumulation of lead…
Read DefinitionLeishmaniasis
Definition: Leishmaniasis is a parasitic disease caused by protozoa of the genus *Leishmania*, transmitted to humans through the bite of…
Read DefinitionLife expectancy
Definition: Life expectancy is a statistical measure representing the average number of years a person is expected to live, based…
Read DefinitionListeriosis
Definition: Listeriosis is a serious infection caused by the bacterium Listeria monocytogenes, primarily affecting pregnant women, newborns, older adults, and…
Read DefinitionLogistic regression
Definition: Logistic regression is a statistical method used to model the probability of a binary outcome (e.g., presence or absence…
Read DefinitionLongitudinal study
Definition: A longitudinal study is an observational research method that repeatedly examines the same group of individuals or subjects over…
Read DefinitionLoss to follow-up
Definition: Loss to follow-up refers to participants in a study or patients in a public health program who cannot be…
Read DefinitionLyme disease
Definition: Lyme disease is a tick-borne infectious disease caused by bacteria, primarily *Borrelia burgdorferi* in North America, transmitted to humans…
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