General and Special Veterinary Epizootiology

Comprehensive vocabulary flashcards covering the core concepts, epidemiological terminology, disease dynamics, diagnostics, therapies, and biosecurity protocols presented in the veterinary epizootiology lecture.

Epizootiology

The scientific discipline studying infectious diseases in animal populations, including their emergence, development, diagnosis, treatment, pathogen survival outside the host, and environmental influences.

Epizootiological Triangle

A tripartite epidemiological model describing disease dynamics as the interaction among the host organism (susceptible animal), the etiological agent (pathogen), and the external environment.

General Epizootiology

The branch of epizootiology that investigates the general principles of diseases, pathogens, host organisms, environments, and their mutual interactions.

Special Epizootiology

The branch of epizootiology focused on specific infectious agents and diseases, creating targeted preventive programs and control plans for dangerous infections.

Infection (Nákaza)

A disease transmissible directly or indirectly between animals of susceptible species, including transmission to and from humans, as defined by veterinary law.

Morbidity

A measure of the contagiousness or frequency of disease occurrence within a susceptible population.

Mortality

The proportion of deaths occurring within an entire specified population over a set period, typically calculated per year.

Case Fatality Rate (Letality)

The proportion of individuals that die from a specific disease out of the group of animals that are already infected or clinically ill.

Animals Suspected of Infection

Animals that display clinical symptoms or post-mortem lesions indicative of a specific disease, or have returned positive preliminary test results.

Animals Suspected of Being Infected

Animals that show no clinical symptoms or post-mortem lesions, but have had direct or indirect contact with a confirmed source of infection.

Isolation

The temporary, operationally and spatially separated confinement of animals suspected of infection or suspected of being infected.

Quarantine

The temporary separated housing of newly acquired animals for a set duration (typically $4$ weeks) prior to their introduction into an established herd.

Disease Eradication

The complete and definitive elimination and destruction of a disease agent from a population or defined geographic territory.

Zoonosis

An infectious disease that is transmissible naturally between animals and humans.

Infection Outbreak Focus (Ohnisko nákazy)

A holding, farm, or designated location where one or more confirmed cases of an infectious disease have been detected.

Protection Zone (Ochranné pásmo)

A high-restriction area designated immediately surrounding an outbreak focus, typically extending to a radius of $3\,\text{km}$.

Surveillance Zone (Pásmo dozoru)

A secondary outer surveillance area designated around an outbreak focus, typically extending to a radius of $10\,\text{km}$.

Spore

A dormant, non-reproductive cellular structure formed by certain bacteria (e.g., Clostridium tetani) that exhibits extreme resistance to external physical and chemical influences.

Obligate Pathogen

A pathogenic microorganism that inevitably causes disease upon entering a susceptible host.

Opportunistic (Facultative) Pathogen

A microorganism that only causes pathology under specific permissive circumstances, such as compromised host immunity or environmental stress.

Endogenous Infection

An internal infection arising from commensal or dormant microflora already present within the host when predisposing factors enable overgrowth.

Tropism

The biological preference or affinity of a pathogen for infecting a specific tissue, organ, or cell type (e.g., neurotropic, lymphotropic).

Incubation Period

The duration of time between the initial penetration of a pathogen into the host and the appearance of the first clinical symptoms.

Prodromal Stage

The transitional phase of an infectious process marked by non-specific, systemic warning symptoms such as mild fever, inappetence, and lethargy.

Pathognomonic Symptom

A unique, distinctive clinical sign or lesion that specifically diagnoses a single, distinct disease entity (e.g., sardonic smile in tetanus).

Peracute Disease Course

An extremely swift disease course lasting from a few hours up to $2$ days, characterized by high morbidity, high mortality, and sudden death before specific symptoms manifest.

Latent (Inapparent) Course

An asymptomatic infection where clinical signs are absent, but pathological-anatomical alterations may occur and the animal sheds pathogens as a carrier.

Etiotropic Therapy

Therapeutic management directed specifically against the primary causative agent of a disease (e.g., targeted antibiotics or hyperimmune serum).

Bacteriostatic vs. Bactericidal Action

A static action halts pathogen replication while host immunity eliminates it; a cidal action causes rapid and direct microbial death.

Biosecurity

A comprehensive collection of physical, organizational, and operational measures designed to prevent the introduction and transmission of diseases between countries, herds, or within a herd.

Asepsis

A set of preventative technical measures designed to prevent microbial contamination of sterile tissues, environments, and surgical fields.

Antisepsis

The destruction or suppression of pathogenic microorganisms on the skin and living tissues of living animals or humans.

DDD Sanitation (Asanace)

A unified sanitary regimen comprising Disinfection (pathogen elimination), Disinsection (insect eradication), and Deratization (rodent control), along with carcass disposal.

Turnus Operation (All-In/All-Out)

An internal biosecurity system of raising synchronized cohorts of animals of the identical age together to align immune development and permit full cohort cleaning.

Black-White Barrier System

A structural biosecurity framework separating external contaminated zones (black) from internal clean farm housing (white) through mandatory sanitary transfer locks.