A FURTHER STUDY OF EXPERIMENTAL PAROTITIS

Area of Science:

• Virology
• Infectious Diseases
• Epidemiology

Background:

• Epidemic parotitis (mumps) is a contagious viral illness.
• Previous research in 1915-1916 suggested a filterable agent caused parotitis.

Purpose of the Study:

• To confirm and extend previous findings on the causative agent of parotitis.
• To investigate the presence of the infectious agent in various bodily fluids and tissues.

Main Methods:

• Inoculation of cats with filtered salivary secretions from parotitis cases.
• Microscopic examination of infected tissues and lymph glands.
• Detection of the infectious agent in saliva and blood samples from human cases.

Main Results:

• Inoculated cats developed lesions consistent with parotitis, confirming the infectious nature of the salivary secretions.
• The filterable, infective agent was identified in the saliva of humans and inoculated cats, as well as in the glands of infected cats.
• The agent was most readily detected in saliva within the first 3 days of illness, and also found in blood during symptomatic phases.

Conclusions:

• The causative agent of parotitis (mumps) is filterable and present in saliva and blood.
• The findings support the viral etiology of mumps and its transmission routes.