Immune memory after smallpox vaccination persists for at least 50 years in immunized individuals, according to research conducted by scientists at the Emory Vaccine Center and Emory University School of Medicine. This is good news, since the findings, published in the Nov. 15 issue of the Journal of Immunology, suggest that individuals vaccinated against smallpox prior to the end of the smallpox vaccination program in 1972 may still retain at least some protection against smallpox.
Rafi Ahmed, PhD, Georgia Research Alliance Eminent Scholar and director of the Emory Vaccine Center, was principal investigator of the research study, and Shane Crotty, PhD, formerly at Emory University School of Medicine and currently a faculty member at The La Jolla Institute for Allergy and Immunology, was first author. Other members of the research team included Emory microbiologist John Glidewell, Phil Felgner, and Luis Villarreal of the University of California, Irvine, and Huw Davies of Kings College London.
Although scientists have known that acute viral infections and vaccines produce two types of long-term immune memory that provide protection against disease, they are still learning the details of these immune mechanisms.
Holly Korschun | EurekAlert!
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The building blocks of matter in our universe were formed in the first 10 microseconds of its existence, according to the currently accepted scientific picture. After the Big Bang about 13.7 billion years ago, matter consisted mainly of quarks and gluons, two types of elementary particles whose interactions are governed by quantum chromodynamics (QCD), the theory of strong interaction. In the early universe, these particles moved (nearly) freely in a quark-gluon plasma.
This is a joint press release of University Muenster and Heidelberg as well as the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt.
Then, in a phase transition, they combined and formed hadrons, among them the building blocks of atomic nuclei, protons and neutrons. In the current issue of...
Thin-film solar cells made of crystalline silicon are inexpensive and achieve efficiencies of a good 14 percent. However, they could do even better if their shiny surfaces reflected less light. A team led by Prof. Christiane Becker from the Helmholtz-Zentrum Berlin (HZB) has now patented a sophisticated new solution to this problem.
"It is not enough simply to bring more light into the cell," says Christiane Becker. Such surface structures can even ultimately reduce the efficiency by...
A study in the journal Bulletin of Marine Science describes a new, blood-red species of octocoral found in Panama. The species in the genus Thesea was discovered in the threatened low-light reef environment on Hannibal Bank, 60 kilometers off mainland Pacific Panama, by researchers at the Smithsonian Tropical Research Institute in Panama (STRI) and the Centro de Investigación en Ciencias del Mar y Limnología (CIMAR) at the University of Costa Rica.
Scientists established the new species, Thesea dalioi, by comparing its physical traits, such as branch thickness and the bright red colony color, with the...
Scientists have succeeded in observing the first long-distance transfer of information in a magnetic group of materials known as antiferromagnets.
An international team of researchers has mapped Nemo's genome, providing the research community with an invaluable resource to decode the response of fish to...
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