Biological agent
Definition: A biological agent is any microorganism, toxin, or other substance derived from living organisms that can cause disease, incapacitation,…
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Decode complex terminology and master the language of public health.
Biologically effective dose
Definition: The biologically effective dose (BED) is the quantity of an external agent (e.g., chemical, radiation, pathogen) that reaches a…
Read DefinitionBiomagnification
Definition: Biomagnification is the increasing concentration of a substance, such as a toxic chemical, in the tissues of organisms at…
Read DefinitionBiomarker
Definition: A biomarker is a measurable indicator of a biological state, process, or condition within an organism. In public health,…
Read DefinitionBiomonitoring
Definition: Biomonitoring is the direct measurement of environmental chemicals or their metabolites in human biological samples, such as blood, urine,…
Read DefinitionBioremediation
Definition: Bioremediation is an environmental clean-up technology that utilizes living organisms, primarily microorganisms and plants, to degrade, detoxify, or remove…
Read DefinitionBiosafety levels (BSL)
Definition: Biosafety Levels (BSL) are a set of escalating containment precautions and practices established for working with infectious microorganisms and…
Read DefinitionBiostatistics
The application of statistics to a wide range of topics in biology, particularly identifying correlations and findings in public health data.
Read DefinitionBiosurveillance
Definition: Biosurveillance is the systematic, real-time collection, analysis, interpretation, and dissemination of health-related data to detect, assess, and monitor biological…
Read DefinitionBioterrorism
Definition: Bioterrorism is the intentional release of biological agents, such as viruses, bacteria, or toxins, to cause illness or death…
Read DefinitionBirth cohort
Definition: A birth cohort refers to a group of individuals born during a specific, defined period, such as a year…
Read DefinitionBirth control
Definition: Birth control, also known as contraception, refers to methods or devices used to prevent pregnancy. These methods intentionally interfere…
Read DefinitionBirth defects
Definition: Birth defects, also known as congenital anomalies, are structural or functional abnormalities that are present at birth, affecting any…
Read DefinitionBirth outcomes
Definition: Birth outcomes refer to the health status of a newborn and the birthing parent immediately following delivery, encompassing various…
Read DefinitionBlood lead levels
Definition: Blood lead levels (BLLs) quantify the amount of lead present in a person's blood, serving as the primary indicator…
Read DefinitionBlood pressure measurement
Definition: Blood pressure measurement is the quantitative assessment of the force exerted by circulating blood against the walls of the…
Read DefinitionBlood safety
Definition: Blood safety refers to the comprehensive set of policies, procedures, and practices implemented to ensure that blood and blood…
Read DefinitionBlood-brain barrier
Definition: The blood-brain barrier (BBB) is a highly selective semipermeable border of specialized endothelial cells that prevents most solutes in…
Read DefinitionBloodborne pathogens
Definition: Bloodborne pathogens are microorganisms found in human blood that can cause disease in humans. Transmission typically occurs through exposure…
Read DefinitionBody burden
Definition: Body burden refers to the total amount of chemicals present in the human body at a given time, resulting…
Read DefinitionBody composition
Definition: Body composition refers to the relative proportions of different tissue types that constitute the human body, primarily distinguishing between…
Read DefinitionBody Mass Index (BMI)
Definition: Body Mass Index (BMI) is a numerical measure of a person's weight in relation to their height, calculated as…
Read DefinitionBooster dose
Definition: A booster dose is an additional administration of a vaccine given after the primary vaccination series to enhance or…
Read DefinitionBreast cancer screening
Definition: Breast cancer screening involves the systematic examination of asymptomatic individuals to detect breast cancer at an early, more treatable…
Read DefinitionBreastfeeding promotion
Definition: Breastfeeding promotion encompasses a comprehensive set of strategies and interventions aimed at encouraging, protecting, and supporting optimal breastfeeding practices…
Read DefinitionBroad-spectrum antibiotic
Definition: A broad-spectrum antibiotic is a type of antimicrobial drug effective against a wide range of bacterial species, encompassing both…
Read DefinitionBuffer stock
Definition: A buffer stock in public health refers to a strategically maintained reserve of essential health commodities, such as medicines,…
Read DefinitionBuilding codes
Definition: Building codes are comprehensive sets of legally enforceable regulations governing the design, construction, alteration, and maintenance of structures. Their…
Read DefinitionBuilt environment
Definition: The built environment encompasses all human-made physical spaces and infrastructure where people live, work, and recreate, including buildings, parks,…
Read DefinitionBurden of disease
Definition: The 'Burden of disease' quantifies the total impact of a disease, injury, or risk factor on a population, measuring…
Read DefinitionBurnout syndrome
Definition: Burnout syndrome is an occupational phenomenon characterized by three dimensions: feelings of energy depletion or exhaustion; increased mental distance…
Read DefinitionBystander intervention
Definition: Bystander intervention refers to the act of an individual witnessing a potentially harmful, dangerous, or inappropriate situation and choosing…
Read DefinitionCapacity building
Definition: Capacity building in public health refers to the process of developing and strengthening the skills, knowledge, structures, and resources…
Read DefinitionCare coordination
Definition: Care coordination is the deliberate organization of patient care activities between two or more participants (including the patient) involved…
Read DefinitionCarrier state
Definition: A carrier state refers to the condition where an individual harbors an infectious pathogen without exhibiting symptoms of the…
Read DefinitionCase definition
Definition: A case definition is a set of standard criteria used to classify whether a person has a particular disease,…
Read DefinitionCase fatality rate
Definition: The Case Fatality Rate (CFR) is the proportion of individuals diagnosed with a specific disease who die from that…
Read DefinitionCase management
Definition: Case management in public health is a collaborative process that assesses, plans, facilitates, coordinates, evaluates, and advocates for services…
Read DefinitionCase-control study
Definition: A case-control study is an observational epidemiological study that compares individuals with a specific disease or outcome (cases) to…
Read DefinitionCase-mix
Definition: Case-mix refers to the distribution of patients treated by a healthcare provider or system, characterized by factors such as…
Read DefinitionCatchment area
Definition: The geographical area from which a public health service, facility, or program draws its primary population of users or…
Read DefinitionCausality
Definition: Causality in public health refers to the relationship where one event or factor (the cause) directly contributes to the…
Read DefinitionCensoring
Definition: Censoring, in public health and biostatistics, refers to the situation where the exact time of an event of interest…
Read DefinitionCentral tendency
Definition: Central tendency refers to a statistical measure that identifies a single value as representative of an entire distribution, aiming…
Read DefinitionChain of infection
Definition: The chain of infection is an epidemiological model illustrating the six interconnected links necessary for an infectious agent to…
Read DefinitionChi-square test
Definition: The Chi-square (χ²) test is a non-parametric statistical hypothesis test used to determine if there is a statistically significant…
Read DefinitionChild mortality
Definition: Child mortality refers to the death of children before reaching a specific age, most commonly before their fifth birthday…
Read DefinitionChronic disease
Definition: Chronic diseases are long-lasting conditions that are generally not curable but are manageable, often progressing over time and requiring…
Read DefinitionCircadian rhythm
Definition: A circadian rhythm is an intrinsic, approximately 24-hour cycle that regulates various physiological and behavioral processes in living organisms,…
Read DefinitionClassification bias
Definition: Classification bias refers to a systematic error in the categorization or assignment of individuals or data points into groups,…
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