The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 1983
Filed:
Mar. 20, 1981
Eliora Z Ron, Tel Aviv, IL;
Abstract
The present invention relates to a live vaccine for the vaccination of poultry and mammals against a variety of gram negative pathogens belonging to Enterobacteriaceae, comprising a bacterial deletion mutant derived from a non-pathogenic strain of E. coli; to a process for obtaining bacterial mutant strain for use in a live vaccine according to claim 1, which comprises exposing a non-pathogenic strain of E. coli to a mutation inducing agent and selecting strains devoid of O-antigens, and cultivating same to obtain the bacteria for use in such live vaccine; to the novel mutant strain E. coli LR-2, and to a process for immunizing poultry and mammals against Enterobacteriaceae which comprises applying to the avian or to the mammal an effective dose of such a vaccine by oral route or as aerosol.