Response

Normally, a low-grade infection which would not spread would not require the doctor to report the information. However, there are various factors that would necessitate a physician to report the information in the event of low-grade infection.  Such cases include when the infection causes high morbidity and mortality, in the case of symptom complexes, a noticeable increase in the infection, or complexities in disease patterns.  The exceptional cases would require an earlier epidemiologic investigation than would be necessary.