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:
Feb. 03, 2004
Filed:
Mar. 02, 2001
Lingling Zeng, Brooklyn, NY (US);
Lewis Markoff, Bethesda, MD (US);
Abstract
The present invention is directed toward vector stage replication-defective flaviviruses that are replication-defective in mosquito vectors that transmit them to humans. Such mutant flaviviruses may be useful as vaccines. The replication-defective flaviviruses of the present invention demonstrate a limited ability to replicate in the vector organisms that transmit flaviviruses from one host to another. More specifically, the present invention is directed toward the construction and propagation of flaviviruses that possess 3′-noncoding regions altered in such a way as to prevent or severely limit viral reproduction in a vector organism. In one embodiment of the present invention, a replication-defective dengue virus that is replication-defective in arthropods is contemplated for use as a vaccine. In another embodiment, a replication-defective dengue virus that is replication-defective in mosquitoes is contemplated for use as a vaccine. The present invention also contemplates methods of producing such mutant flaviviruses for use as vaccines as well as methods that induce a protective immunity against flavivirus infection or disease in an immunized subject.