Abstract: A digital vaccine system, method and device that maintains a health knowledge base, inputs user characteristics, generates health scores based on the user characteristics and provides pathogen risk recommendations based on the user characteristics, health scores and knowledge base, wherein the recommendations are indicated by the knowledge base to be likely to improve the user's health.

Abstract: Polypeptides comprising Neisseria meningitidis amino acid sequences. Over 36000 meningococcal polypeptide sequences are disclosed. The invention also provides related polypeptides, nucleic acids, antibodies and methods. These can all be usedin medicine for treating or preventing disease and/or infection caused by N. meningitidis, such as meningococcal meningitis.

Abstract: The invention relates to methods for clustering gene and protein sequences. In particular, it involves generation of networks of sequences where the interconnections are based upon a measure of similarity. The invention also provides methods of optimizing and improving the networks by re-wiring of the network based upon overlap of the nearest neighbors of given pairs of nodes. The invention further provides methods of identifying clusters of sequences within the networks and the optimized networks based upon the topology of the network. The clusters identified represent groups of sequences that are related by function and/or evolution. The invention has particular applicability in annotation of sequences in databases and identification of functional homologs which can be very useful for novel therapeutic and diagnostic targets based upon such targets belonging to a cluster or family that contains a known sequence such as a diagnostic sequence, antigen or other therapeutic target.