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. 1943 Feb 1;77(2):127-38.
doi: 10.1084/jem.77.2.127.

THE SWINE LUNGWORM AS A RESERVOIR AND INTERMEDIATE HOST FOR SWINE INFLUENZA VIRUS : IV. THE DEMONSTRATION OF MASKED SWINE INFLUENZA VIRUS IN LUNGWORM LARVAE AND SWINE UNDER NATURAL CONDITIONS

R E Shope  1
Affiliations

THE SWINE LUNGWORM AS A RESERVOIR AND INTERMEDIATE HOST FOR SWINE INFLUENZA VIRUS : IV. THE DEMONSTRATION OF MASKED SWINE INFLUENZA VIRUS IN LUNGWORM LARVAE AND SWINE UNDER NATURAL CONDITIONS

R E Shope. J Exp Med. .

Abstract

1. The presence of masked swine influenza virus has been demonstrated in lungworm larvae from earthworms dug on Midwestern farms. 2. Swine influenza virus infections were provoked in 2 of 3 swine obtained from an Iowa farm during an interepizootic period. 3. The evidence presented has been interpreted as indicating that the swine lungworm is the reservoir and intermediate host for swine influenza virus in the field. 4. A concept of the epidemiology of swine influenza in which the causative virus is represented as being maintained and disseminated in a masked form by its lungworm intermediate host has been presented.

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References

    1. J Exp Med. 1931 Jul 31;54(3):349-59 - PubMed
    1. J Exp Med. 1943 Feb 1;77(2):111-26 - PubMed