Week 13 Micro Lab Vocab

Communicable

transmissible from

one person to another

Epidemic

◦ An outbreak or sudden rapid spread of disease

◦ Ex: Measles at Disneyland

Pandemic

◦ World-wide epidemic

◦ Ex: Tuberculosis, HIV/AIDS, influenza

Endemic

◦ Infectious disease that has steady frequency over a long period of time in a particular region

◦ Ex: Malaria

Common Source of Epidemics

◦Occur rapidly, many new cases immediately after initial case

◦Usually involves contaminated objects or food or water

◦Cases drop rapidly after source is identified and stopped

Host-to-host (propagated)

◦Grow slowly and subside slowly

◦Controlled by education, vaccination, antibiotics, hygiene, quarantine

Herd Immunity

When a certain proportion of a

population is vaccinated or already

immune to an infectious agent, an

outbreak is unlikely

◦ Protects individuals who can’t be

vaccinated (pregnant, infants,

immunocompromised