The planned list of vaccines given to children at set ages to protect them against common dangerous infections.
The schedule gives the right vaccine at the right age: birth is BCG, oral polio and hepatitis B; infancy adds diphtheria-pertussis-tetanus, Haemophilus and polio; then measles and boosters; keep the cold chain.
The Epidemiological Triad
The classic model of disease causation and its use in outbreak control.
Levels of Prevention
Interventions applied at different points along the natural history of disease.
Endemic, Epidemic & Pandemic
Terms describing how much disease is present in a population.
Screening (Wilson's Criteria)
Testing apparently healthy people to detect disease early.
Sensitivity & Specificity
Measures of how well a diagnostic test performs.
Epidemiological Study Designs
The main designs used to study disease and its causes.