Swine Flu Virus

In Scotland, following the two waves of infection that have occurred so far, it appears that older people are no longer more likely to have significant levels of antibodies than young people. The seroprevalence among young people is, presumably, primarily due to exposure during the two waves of infection. While we currently do not have [...]

Given these inherent limitations in the data, however, some consistent observations have been noted. The results of the baseline seroepidemiological surveys provided reasonably consistent evidence that cross-protective immunity from previously circulating H1N1 strains increases with age, with the highest levels occurring in individuals aged >60 years. This finding may explain the low observed rates of [...]

These structures clearly illustrate the high degree of conservation in the Sa site between the 2009 H1N1 flu and the hemagglutinins of H1N1 viruses found during the first decades of the 20th century. Exposure to older viruses circulating from 1918 through the 1930's or 1940's likely elicited 2D1-like antibodies that can cross-react with the 2009 [...]

At least 28 genetically different types of the H1N1 swine flu virus have entered Japan since the time of the outbreak last spring to late September, researchers at the Infectious Disease Surveillance Center said Wednesday. The first types of the “new” virus, which spread through Kobe and Osaka in the initial phase of Japan's outbreak [...]