The duration of mumps virus shedding after the onset of symptoms

Philip M Polgreen1, Lucas C Bohnett, Joseph E Cavanaugh

  • 1Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA. philip-polgreen@uiowa.edu

Insights

Mumps virus shedding decreases quickly after symptom onset. However, 8%-15% of patients may remain contagious for up to 5 days post-symptom onset, indicating a prolonged infectious period.

Area of Science:

  • Epidemiology
  • Virology
  • Public Health

Background:

  • Mumps is a contagious viral illness.
  • Understanding viral shedding duration is crucial for controlling outbreaks.

Purpose of the Study:

  • To quantify the duration of mumps virus shedding after symptom onset.
  • To estimate the proportion of patients remaining contagious post-symptom onset.

Main Methods:

  • Logistic regression modeling.
  • Analysis of data from the 2006 Iowa mumps outbreak.

Main Results:

  • Mumps virus shedding probability declines rapidly after symptom onset.
  • An estimated 8%-15% of mumps patients shed the virus 5 days after symptom onset.
  • A significant proportion of patients may remain contagious during this extended period.

Conclusions:

  • Mumps virus shedding duration varies among individuals.
  • Public health strategies should consider the potential for prolonged contagiousness in mumps patients.
  • Further research may be needed to identify factors influencing shedding duration.

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