Tipe wabah
1. Point source outbreak
In
a point
source outbreak, persons are exposed over a brief time to the
same source, such as a single meal or an event. The number of cases rises
rapidly to a peak and falls gradually. The majority of cases occur within one
incubation period of the disease.
2.
Continuous Common Source
In a continuous common source outbreak, persons
are exposed to the same source but exposure is prolonged over a period of days,
weeks, or longer. The epi curve rises gradually and might plateau.
3.
Propagated (person
to person) Outbreak
In a propagated
outbreak, there is no common source because the outbreak
spreads from person-to-person. The graph will assume the classic epi curve
shape of progressively taller peaks, each being one incubation period apart.
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