The findings by the NIH and FDA that XMRV is associated with chronic fatigue syndrome has been accepted for publication by the Proceedings of the National Academy of Sciences (PNAS). Release of the article has been blocked by PNAS due to work carried out by the US Centers for Disease Control and... 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
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
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
One hundred million years ago the earth’s climate was much warmer than today and vast inland seas stretched across entire continents. The land was dominated by charismatic megafauna that would one day serve as inspiration for Sir Arthur Conan Doyle’s novel The Lost World. This period is commonly... Read More
First and foremost, this and the podcast of the virology course lectures available on iTunes is a gift to the public. I am applying to medical school and I appreciate the material on a topic I did not have time to take but have had a long standing int... Read More
Vincent, I am a huge fan of TWIV and thank you and the others for taking time out of your busy schedule to do the program. I have my B.S. in Biology and Chemistry and would love to go back to school. I read textbooks, listen to podcasts from itunesU and... Read More
Hi Dr Racaniello,
I am a long time listener of TWIV and really enjoy the informal scientific discussions. I listen to TWIV while working in the lab and am trying to catch up on TWIM and TWIP episodes too.
I have been dill... 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
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
The figure for the number of prokaryotic cells on the planet, roughly 5x1030, is considerably greater than that of the estimated number of stars in the firmaments (3x1023). These two numbers have one thing in common: they both grew hugely and rather suddenly in recent human history.
Click "s... Read More
Merry Youle from the Small Things Considered blog ponders the potential size a virus can be:
"With such fascinating stories being told by Mimivirus and the other giants, people are now looking for them in more environments. Modified techniques are called for, as those used previously to spot ... Read More
El podcast del microbio Nº 231 is about the recent aproval from european autorities of fidaxomicin, an antibiotic for the use in... Read More
Vincent and Dickson continue their discussion of nematodes with the whipworm Trichuris trichiura.
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Vincent and Dickson review the life cycle and pathogenesis of the flagellated protozoan parasite Giardia lamblia.
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Vincent and Dickson continue their discussion of protozoan parasites that cause diarrhea with a review of amebic dysentery caused by Entamoeba histolytica.
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Vincent and Dickson move on to nematodes with a discussion of the pinworm Enterobius vermicularis.