Abstract: The present invention relates to novel vaccines for the prevention or attenuation of Lyme disease. The invention further relates to isolated nucleic acid molecules encoding antigenic polypeptides of Borrelia burgdorferi. Antigenic polypeptides are also provided, as are vectors, host cells and recombinant methods for producing the sane. The invention additionally relates to diagnostic methods for detecting, Borrelia gene expression.

Abstract: The present invention relates to a vaccine that comprises selected epitopes within the F protein structure that have been proven to specifically interact with known potent neutralizing antibodies while simultaneously being presented as part of a synthetic structure that offers these epitopes apart from the other non-neutralizing antigenic determinants of the virus but held in a native conformational form and thereby capable of eliciting neutralizing antibodies.

Abstract: Disclosed are hxuB and hxuC genes and DNA segments from H. influenzae such as H. influenzae type b (Hib) and nontypeable H. influenzae (NTHI). The HxuB and HxuC proteins, being surface expressed, are contemplated for use in the preparation of vaccines against pathological H. influenzae infections, and in particular, vaccines for use in children and other individuals who respond poorly to capsular-based vaccines. DNA segments encoding these proteins and anti- HxuB and HxuC antibodies will also be of in various screening, diagnostic and therapeutic applications.

Abstract: A vector and a prokaryote transformed therewith which includes nucleic acid sequences which make possible the autocatalytic deletion of nucleotide sequences encoding an antibiotic resistance phenotype. The prokaryote can be a bacterium, and in particular a mycobacterium. Such transformed mycobacteria may be employed in vaccines, thereby eliminating the attendant risk of vaccines including antibiotic resistance markers.