- Jun 27, 2010
I had oral and genital contact with someone with oral herpes recently. I have not seen symp...

Incidence is the number of new cases of a condition, symptom, death, or injury that arise during a specific period of time, such as in a year. It is often expressed as a percentage of a population (for example, 25% of Americans were diagnosed with the flu in 2002).
Incidence shows the likelihood that a person in that population will be affected by the condition.