A laboratory in the Netherlands has identified a lethal influenza H5N1 virus strain that is transmitted among ferrets. These findings are under review by the National Science Advisory Board for Biosecurity (NSABB) to ensure that they do not constitute a threat to human health. Meanwhile both the... Read More
A recent paper published on Biomedcenteral by Jonathan E Allen , Shea N Gardner , Elizabeth A Vitalis, and Tom R Slezak discovers that new genetic markers for human host-specificity and high lethality in influenza viruses were identified by considering combinations of amino acids conserved amon... Read More
Small Things Considered co-blogger Merry Youle has a post about the diversity of life in McKelvey Valley, a broad, glacially-carved pass just west of McMurdo Sound in Antarctica. Her writing is inspired in part by a recent paper from the University of Hong Kong (See Read More
This is a great online children's book about the role of bacteria in our lives by Dr. Mel Rosenberg for ages 3+. Read More
I have heard recently that some types of herpes virus may protect us from bacterial infections. This made me remember of myxomavirus, viral oncotherapy and how tumor cells have a compromised immune response. Do you think it is possi... Read More
The third annual installment of my virology course at Columbia University, Biology W3310, has begun, and all the lectures will be available online. Read More
There is an excellent question in the comments to “Are all virus particles infectious?“: if the particle-to-PFU ratio for a virus stock is 10,000:1, and I infect 1,000,000 cells with 10,000 particles, how many plaques would I expect to observe? Answering this question provides insight into the p... Read More
To the TWiVerati Intelligencia,
Each week you begin your show with the tagline, "This Week in Virology: The podcast about viruses, the kind that make you sick."
I recognize that viruses have been responsible for some of the biggest epidemic... Read More
Hello Professor Vincent,
First of all, thank you for your wonderful podcasts! I'm a CFS sufferer and also a student Applied Science so I'm interested in many of the topics discussed for those two reasons and always learning new things.
I... Read More
A dairy cow in California is the fourth known American case of mad cow disease, which is caused by prions, infectious agents composed only of protein (the story hit the press the day after my lecture on this type of illness). Unlike viruses, prions have no nucleic acid and no protective coat. Bu... Read More
A salt-loving (halophilic) bacterium which can grow in medium containing arsenic instead of phosphorus has been selected from the microbial community of Mono Lake in California. Arsenic (As) is a chemical analog of phosphorus and is usually toxic because it can enter metabolic pathways in the pl... Read More
Jamie Henzy, a postdoctoral researcher at Boston College, has authored a post on Small Things Considered that explores the shady world of the deltaretrovirus genus.
"Among retroviruses, the deltaretrovirus genus is something of a shady bunch, its members lurking in the shadows, causing troubl... Read More
Hello to the TWiV crew,
Here are a couple of picks I thought would be good for provoking thought and generating discussion...
While working on a project, I came across some papers attempting to define what "critical thinking" means. I app... Read More
Rich Condit found an article highly critical of the original Wakefield study (claiming a link between MMR vaccine and autism) which was published in the same issue of Lancet. He asked the publisher, Elsevier, to open up the article to non-subscribers so he could recommend it as a pick of the wee... Read More
When infection with hepatitis C virus goes from acute to chronic, severe liver disease may occur which requires organ transplantation. Nearly 200 million people are chronically infected with HCV, necessitating approaches to preventing and treating infections. No HCV vaccine is available, and cur... Read More
On the Small Things Considered blog, Michael Schmidt, Professor and Vice Chairman of Microbiology and Immunology at the Medical University of South Carolina, reviews a recent paper entitled "Precise Manipulation of Chromosomes in Vivo Enables Genome-Wide Codon Replacement" by Church and colleagu... Read More
The virologists who carried out the contentious experiments on influenza H5N1 transmission in ferrets have agreed to remove certain details from their manuscript, according to ScienceInsider. This is a bad day for virology, and for science in general. The decision by the NSABB sets a precedent f... Read More
Norton Zinder made two important discoveries in the field of virology. While a Ph.D. student with Joshua Lederberg at the University of Wisconsin-Madison he found that viruses of bacteria (bacteriophages) could move genes from one host to another, a process called transduction. Later in his own ... Read More
Australian virologist Frank Fenner, MD was born in Ballarat, Victoria in 1914. He earned a Doctor of Medicine in 1942 at the University of Adelaide, and from 1940 – 1946 he worked on the malaria parasite in Egypt and Papua New Guinea as an officer in the Australian Army Medical Corps. He subsequ... Read More
This is a great article by Carl Zimmer in the NY Times (@carlzimmer on Twitter) about the evolution process of viruses.
"Some viruses use DNA, like we do, to encode their genes. Others, like the influenza virus, use single-strand RNA. But viruses all have one thing in common, said Roland Wolk... Read More