Researchers at Oregon Health & Science University this week announced preliminary study results showing smallpox vaccine protection lasts longer than previously thought. Until now, it was widely accepted that smallpox vaccine protection lasted approximately three to five years. However, early study data shows that significant, partial protection may last many decades after inoculation.
“More than 90 percent of Americans older than 35 have already been vaccinated against smallpox. This translates into about 150 million people who are likely to have at least some level of detectable immunity against this disease,” said Mark Slifka, Ph.D., a researcher at the OHSU Vaccine and Gene Therapy Institute. Slifka and his colleague Erika Hammarlund presented the initial findings at this week’s meeting of the American Society for Microbiology in Washington, D.C.
To conduct their research, Slifka and his colleagues studied blood samples taken from 306 people who had received smallpox vaccinations. These immunizations occurred as recently as one month prior to testing and as long ago as 75 years. Scientists concentrated on two types of immunity in these patients. The first form of immunity is linked to levels of antibody produced in the body in response to the vaccine. These antibodies protect patients by forming the first line of defense against smallpox if an exposure occurs. The second form of immunity is T-cells programmed by the vaccine to attack the smallpox virus.
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University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
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Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
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