Related Experiment Video
Updated: Jun 19, 2026

Generating a Reproducible Model of Mid-Gestational Maternal Immune Activation using Poly(I:C) to Study Susceptibility and Resilience in Offspring
Published on: August 17, 2022
AN INVESTIGATION OF THE ETIOLOGY OF MUMPS
1Department of Pathology, Vanderbilt University Medical School, Nashville.
Abstract:
1. From four out of six specimens of saliva from six cases of mumps in the early stages of the disease, a filterable cytotropic virus has been obtained which induces in M. rhesus monkeys, following inoculation of the parotid glands through Stensen's duct, an acute, non-suppurative parotitis analogous to mumps. 2. This virus has not been found in normal saliva, nor does it correspond to any known virus with which we are familiar. 3. The virus is free of demonstrable microorganisms including spirochetes. 4. It is judged that this virus is the causative agent of mumps.
Insights
Researchers isolated a novel virus from mumps patients' saliva. This filterable virus caused parotitis in monkeys, suggesting it is the causative agent of mumps.
Area of Science:
- Virology
- Infectious Diseases
- Epidemiology
Background:
- Mumps is a contagious viral illness characterized by swelling of the salivary glands.
- The specific causative agent of mumps had not been definitively identified prior to this study.
Purpose of the Study:
- To identify and isolate the infectious agent responsible for mumps.
- To experimentally induce mumps-like symptoms in a susceptible animal model.
Main Methods:
- Saliva samples were collected from patients in the early stages of mumps.
- A filterable virus was isolated from positive samples.
- The isolated virus was inoculated into the parotid glands of rhesus monkeys via Stensen's duct.
Main Results:
- A filterable, cytotropic virus was successfully isolated from 4 out of 6 mumps patient saliva specimens.
- Inoculation of rhesus monkeys resulted in acute, non-suppurative parotitis, clinically analogous to human mumps.
- The isolated virus was free of detectable microorganisms and did not correspond to known viruses.
Conclusions:
- The isolated filterable virus is identified as the causative agent of mumps.
- This discovery provides a critical step in understanding mumps pathogenesis and developing diagnostic tools.
Related Concept Videos
Poliomyelitis
Viral Meningitis
Investigation of Disease Outbreaks
Encephalitis l: Introduction
Bacterial Meningitis II: Pathophysiology
Atypical Pneumonia
