According to a statement released by the University of Vienna, a team of scientists from the University of Vienna, the University of Tartu, Cambridge University, and University College London have reconstructed the genomes of human betaherpesvirus 6A and 6B (HHV-6A/B) from samples taken from human remains recovered from archaeological sites in Europe. Today, HHV-6B infects about 90 percent of children by age two, causing roseola infantum, also known as "sixth disease, " an illness characterized by a rash and a fever. In addition to causing illness, these viruses are capable of integrating into human chromosomes and remaining dormant. Such inherited...