A living, attenuated, oral vaccine system is described for the immunization gainst enteric disease. This oral vaccine is a genetic hybrid derivative of an attenuated galactose epimeraseless strain of S. typhi which carries at least one protective antigen other than normal somatic S. typhi antigens. The oral vaccine can provide protection against both typhoid fever and at least one other enteric disease. A bivalent oral vaccine is described wherein the non-typhoid protective antigen is the plasmid-encoded form I antigen of Shigella sonnei. A protective antigen from Shigella sonnei was transferred to a streptomycin resistant mutant of S. typhi strain Ty21a. The transconjugant S. typhi strain expressed both S. typhi and S. sonnei antigens and protected experimental animals against lethal infections with either S. typhi or S. sonnei. This strain is considered to be useful as a vaccine against typhoid fever and bacillary dysentery caused by S. sonnei. The mutated galactose epimeraseless S. typhi strain such as S. typhi Ty21a strain can be utilized as a carrier strain for other protective antigens.

The United States of America as represented by the Secretary of the Army

Oral vaccine for immunization against enteric disease

An all-natural herbal composition and methods of preparing the same are provided. The novel Artemisinin Combination Therapy (ACT) consists of artemisinin and its derivatives and berberine, the two active substances mixed with various selected excipient compounds to form a single pill, tablet or capsule for treatment and prevention of malaria, dengue fever, yellow fever, dysentery, Lyme disease, babesiosis, progressive multifocal leukoencephalopathy, Helicobacter Pylori, and colitis, in adults and children. A tablet or pill for children is formulated to be chewable.

U.S. Phytotherapy, Inc.

Artemisinin with berberine compositions and methods of making

The present invention provides an oral vaccine against a bacterial infectious disease (e.g., typhoid fever, cholera, or dysentery). The oral vaccine of the present invention is a capsule formulation in which a transformed microorganism that expresses a flagellin antigen protein or that secretes a flagellin antigen protein out of the cell of the microorganism is encapsulated with an acid-resistant membrane. Examples of the microorganism include intestinal bacteria belonging to the genus Bifidobacterium, the genus Lactobacillus, the genus Lactococcus, and the like. The form of the capsule formulation may be any one of a seamless capsule formulation, a soft capsule formulation, and a hard capsule formulation.

dysentery/koorts

Oral vaccine for immunization against enteric disease

Artemisinin with berberine compositions and methods of making

Artemisinin with berberine compositions and methods of making

Oral vaccine

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