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HIV drug resistance lasts about 1 year in women treated with nevirapine to prevent infant infection

A new international study reported in PLoS Medicine confirms that a single dose of nevirapine (sdNVP) can lead to HIV treatment failure in women who receive the drug to prevent transmission of the AIDS virus to their infants. However, the increased risk of failure could only be detected in women... Read More

Beewolves Protect Their Offspring With Antibiotics; Digger Wasp Larvae Use Bacteria Against Infections

Digger wasps of the genus Philanthus, so-called beewolves, house beneficial bacteria on their cocoons that guarantee protection against harmful microorganisms.

Scientists of the Max Planck Institute for Chemical Ecology in Jena teamed up with researchers at the University of Regensburg and th... Read More

TWiV 71

Jennie writes:


I wonder whether we have entered a new chapter in the book of human knowledge sharing. I'm often working physically when I listen to my favorite science podcasters (TWIV, TWIP and Mark Crislip).... so your entertaining program is intertwined with raking leaves,... Read More

TWiV 70

Tom writes:


I just finished listening to the Original Antigenic Sin episode where you were talking about Wol... Read More

TWiV 71: Please Mr. Postman

Unable to embed Rapid1Pixelout audio player. Please double check that:  1)You have the latest version of Adobe Flash Player.  2)This web page does not have any fatal Javascript errors.  3)The audio-player.js file of Rapid1Pixelout has been included.

On episode #71 of the podcast This Week in Virology, Vincent, Dickson, Alan and Rich answer listener questions about maternal infection and fetal injury, viral gene therapy, eyeglasses and influenza... Read More

U.S. company Virxsys says using AIDS to fight AIDS

Maryland-based Virxsys Corp said tests on monkeys showed its HIV-based vaccine might at least treat infections, if not prevent them, and it is now seeking permission to try it in people.

And the privately held company is encouraged by some early results of a gene therapy approach to controlli... Read More

Deadly Flu Virus Made In A Lab

Just how dangerous influenza viruses can be has been shown by a research project which involved the mixing of very dangerous bird influenza viruses with ordinary more contagious influenza viruses. The researchers led by Professor Yoshihiro Kawaoka from the University of Wisconsin-Madison mixed u... Read More

Noroviruses -- they're not just for cruise ships anymore

True, the most highly publicized outbreaks of norovirus do seem to occur on cruise ships, and only in part because the idea of fun-loving tourists (i.e. vacationers) getting sick elicits a perverse pleasure in everyone else (i.e. non-vacationers). But lack of a desire to chug through pristine oc... Read More

World Salmon Supply to Drop Most Since 1990 on Virus

Global supply of Atlantic salmon will decline the most in two decades this year after a virus decimated output in Chile, bolstering the steepest advance in Norwegian prices since at least 2000.

The harvest will drop 5 percent to 9 percent, the first “significant” decline since 1990, said Joer... Read More

Molecular Biology of Soil: an introduction

This article is the first in a series that discusses the issue surrounding the molecular studies of soil microbiology. In this first article we cover the basics of soil and why it is one of the most challenging samples to study and how to overcome those challenges. There are major differences im... Read More

The Microbiology of Food

Its seems as though every day there is another outbreak of bacterial contamination in food products, if you follow the twitter feed of the FDA and the posts on Microbeworld.org daily, as I do. Most recently, red pepper and Italian sausages were the source of salmonella contamination and had to b... Read More

Germs in tobacco are potential source of respiratory infections blamed on smoking

Cigarettes host a bacterial bonanza of hundreds of different germs, including those responsible for many human illnesses, a new genetics study reports.

The data support findings described last September by scientists at the Roswell Park Cancer Institute in Buffalo, N.Y. They extracted tobacco... Read More

Deadly Germs Largely Ignored By Drug Firms

Gram-negative bacteria are practically built to withstand drugs, which is one reason few drug makers have rushed to pursue treatments.

The bacteria have a double cell membrane to shield them, compared with Gram-positive organisms, which have a single membrane. They can make various enzymes t... Read More

Documents reveal leaks and spills at (Canadian) national virus lab

It sits smack in the centre of downtown Winnipeg and contains some of the world's deadliest pathogens behind air-tight walls and biosafety cabinets.

But new documents reveal Canada's National Microbiology Lab isn't immune to leaks, spills and failures in restricted areas where lethal organism... Read More

A ‘test and treat’ approach to fighting HIV

A promising new way to prevent the spread of HIV is being tested in Botswana on a group of people who are being exposed to a particularly vicious strain of the virus. They are now being treated with strong antiretroviral drugs.

The “test and treat’’ approach is not primarily intended to ward ... Read More

Anadys study results show little difference between hepatitis C drug, placebo

Development-stage drug developer Anadys Pharmaceuticals Inc. said late Wednesday its developing hepatitis C drug was only slightly more effective at treating the virus than placebo in a midstage study.

The company's shares plunged 46 cents, or 20 percent, to $1.85 in premarket trading.

Aft... Read More

Hyping H1N1: Did It Create A Dangerous Flu Fatigue?

With the World Health Organization warning yet again this week that the H1N1 virus has yet to reach its peak, a flu season that's milder than average hardly seems that way. Now, the nearly yearlong coverage of H1N1 has left some worried that future influenza outbreaks will be met with ambivalent... Read More

Methyl red test

Methyl red test. Positive, negative, uninoculated (1-6) Read More

C. elegans micro-injection

This video shows the process of injecting a a construct with gene manipulated DNA into a C. elegans worm. The outcome in this case was the rolling worm with the green fluorescent protein in it that localized to the body wall muscle, giving the worm the four green stripes along his body. Read More

XMRV not detected in Dutch chronic fatigue patients

The suggestion that the retrovirus XMRV is the etiologic agent of chronic fatigue syndrome (CFS) arose from a study in which the virus was found in 68 of 101 US patients. The virus was not detected in two independent studies of 186 and 170 CFS patients in the United Kingdom. A new Dutch study ha... Read More

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