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Tag: "infection" at biology news

Whiteflies and plant viruses can help each other to speed up biological invasion

...ed with this vector." The study also shows that infection of the whiteflies per se has limited effects on the survival and fecundity of the vectors, and the B whitefly acquires the benefits through feeding on the virus-infected plants. Thus the mutualism is indirect. The researchers believe that this kind o...

Rapid response was crucial to containing the 1918 flu pandemic

... the pandemic passed often saw the re-emergence of infection and had to reintroduce restrictions, says Neil Ferguson, D.Phil., of Imperial College, London, the senior author on the second study. In their paper, Dr. Ferguson and his coauthor used mathematical models to reproduce the pattern of the 1918 pandemic...

Investigating the measles virus as a tool to kill multiple myeloma

...ansplants and must either have had a prior measles infection or been vaccinated against it. In the 1970s, measles infections were observed to cause regression of pre-existing cancerous tumors in children. This information was noted, but nothing was done to study this phenomenon until the late 1990s, when, ...

Risk of HIV transmission highest early in infection

...f Infectious Diseases, now available online, early infection accounted for nearly half of all transmission occu...ts.? A high viral load associated with early HIV infection is what makes newly infected individuals so infectious, according to Drs. Brenner and Wainberg. In ...

Transfusion expert urges wider use of filtered blood

...transfusions, researchers found that post-surgical infection rates dropped from 33 percent to 23 percent. In other words, the relative risk of infection dropped by about 30 percent for the patients with leukoreduced blood. "Our data would suggest tha...

UCI scientists reconstruct migration of avian flu virus

...y, the virus can find the right host to spread the infection to the next location. This parallel evolution ?the independent evolution of similar traits ?enables H5N1 to spread quickly, the scientists believe. "The ability to develop the right mutation allows the virus to hop from one host type to the next,"...

Jefferson scientists find rabies-based vaccine could be effective against HIV

...ws that the vaccine ?which doesn’t protect against infection ?prevents development of disease. Reporting April 1, 2007 in the Journal of Infectious Diseases, the scientists showed that two years after the initial vaccination, four vaccinated non-human primates were protected from disease, even after being "c...

Scripps research study shows humans and plants share common regulatory pathway

...une system’s recognition and response to bacterial infection and members of the R protein family. "There has been a great deal of speculation that R proteins and Nod1 are related, but our study provides the first direct link between plants and humans," said Richard Ulevitch, the Scripps Research scientist ...

Veterinary scientists explore poultry virus as cancer killer

...an interferon antiviral system that activates upon infection with NDV thereby preventing replication of the virus, explains Dr. Subbiah. Cancer cells, however, have defective interferon antiviral systems, he said. NDV utilizes the defects to replicate in the diseased cells. The replication of NDV leads to the ...

Discovery could lead to better control of hemorrhagic fever viruses

...s enter and attack the body's cells, and show that infection can be inhibited by blocking this receptor. The fi...ng iron, possibly predisposing them to more severe infection when exposed to the rodents that carry the viruses. Choe's lab is now trying to find the cellular...

Bypassing eggs, flu vaccine grown in insect cells shows promise

...arger dose. Together, the two vaccines reduced flu infection rate by 86 percent. “Even though the study was small, the results are very promising,?said Treanor, who is professor of Medicine and of Microbiology and Immunology and director of the Vaccine and Treatment Evaluation Unit at the University of Roch...

NT researchers discover breakthrough in malaria treatment

...pplied opportunistically to people at high risk of infection in poor tropical communities." he added. A concern with such a policy is that the resistance will emerge quickly to the long acting drug. However the team believes that by combining the two drugs will help to prevent this from happening. ...

NIAID DNA vaccine for H5N1 avian influenza enters human trial

...A vaccine designed to prevent H5N1 avian influenza infection began on December 21, 2006, when the vaccine was administered to the first volunteer at the National Institutes of Health (NIH) Clinical Center in Bethesda, MD. Scientists from the Vaccine Research Center (VRC) at the National Institute of Allergy an...

Drug-resistant bacterial infections serious complication after corrective eye surgery

...visual acuity. Within 2 weeks, he had developed an infection in his left eye that grew worse, despite treatment, until his vision was only 20/400. When the infection was cultured and found to be MRSA, his antibiotics were changed and his vision recovered to 20/200 o...

Fighting influenza & co. with 40,000 blood samples

...al influenza. For elderly people in particular, an infection can be dangerous. What is more, the flu vaccine is...ter in Amsterdam would now like to find out how an infection with this virus group progresses, in the hope of finding alternative ways of tackling the disease wi...

Synthetic peptide targets latent papilloma virus infections

...cancer, is cervical cancer, the result of high HPV infection rates in the developing world, in Asia and South America and Africa," he added. "If we can get something to stop HPV replication, it would have a big health impact." Botchan, post-doctoral fellow Eric A. Abbate and researcher Christian Voitenleitne...

Africa's first large-scale HIV vaccine study launches

... location for this trial due to the high levels of infection coupled with the good clinical infrastructure, inc...d access to treatment for any sexually transmitted infection acquired during the study. Recent research has shown that men who are circumcised are less likely t...

Rapid oral HIV test shows great promise according to MUHC-led research

... and her colleagues tested 450 individuals for HIV infection at the Mahatma Gandhi Institute of Medical Sciences in Sevagram India. Thirty two percent were found to be HIV positive. Researchers compared the diagnostic accuracy of the OraQuick test from two samples - one obtained from oral fluid (saliva) and ...

Chlamydia vaccine a step closer to reality

...user-friendly." He said with rates of Chlamydia infection in some Australian communities as high as 12 per cent of the female population, there was a "real need" to develop a vaccine. "Chlamydia is the most common infectious disease in the world and results in infertility in women and long-term chronic p...

Anthrax attack posed greater potential threat than thought

...udy shows that more people were at risk of anthrax infection in the Oct. 2001 attack on U.S. Sen. Tom Daschle's...ggest that cell-mediated responses in B. anthracis infection may be more sensitive than antibody responses, and he recommended that future studies of anthrax vac...

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