Abstract
Twenty-five swine, infested with lungworms infected with masked swine influenza virus, were exposed to adverse weather conditions on one or more occasions. Of these, 4 came down with apparent swine influenza, while 6 others developed serological evidence of infection with swine influenza virus. The remaining 15 prepared swine, as well as 8 lungworm-free control swine, failed to show evidence of swine influenza virus infection, despite repeated exposures to adverse weather. The data presented indicate that, in the 10 swine in which swine influenza virus infections were elicited, some feature of the weather to which the animals were exposed was responsible for provoking masked influenza virus to infectivity. The exact constituent of the meteorological complex comprising "weather", responsible for the provocation, cannot be determined from the data obtained.
Full Text
The Full Text of this article is available as a PDF (380.0 KB).
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Shope R. E. SWINE INFLUENZA : III. FILTRATION EXPERIMENTS AND ETIOLOGY. J Exp Med. 1931 Jul 31;54(3):373–385. doi: 10.1084/jem.54.3.373. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Shope R. E. THE SWINE LUNGWORM AS A RESERVOIR AND INTERMEDIATE HOST FOR SWINE INFLUENZA VIRUS : I. THE PRESENCE OF SWINE INFLUENZA VIRUS IN HEALTHY AND SUSCEPTIBLE PIGS. J Exp Med. 1941 Jun 30;74(1):41–47. doi: 10.1084/jem.74.1.41. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Shope R. E. THE SWINE LUNGWORM AS A RESERVOIR AND INTERMEDIATE HOST FOR SWINE INFLUENZA VIRUS : III. FACTORS INFLUENCING TRANSMISSION OF THE VIRUS AND THE PROVOCATION OF INFLUENZA. J Exp Med. 1943 Feb 1;77(2):111–126. doi: 10.1084/jem.77.2.111. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Shope R. E. 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. J Exp Med. 1943 Feb 1;77(2):127–138. doi: 10.1084/jem.77.2.127. [DOI] [PMC free article] [PubMed] [Google Scholar]