Ron Fouchier has discussed his influenza H5N1 transmission experiments in ferrets at an ASM Biodefense Conference, clarifying several assumptions about the transmissibility of the virus in this animal model. Read More
Analysis of poliovirus recovered from the stool of a patient with fatal poliomyelitis revealed that she had been infected with the virus 12 years earlier, probably when one of her children received the oral poliovirus vaccine. This case has the longest known incubation period for vaccine-derived... Read More
Nearly four months ago I stood at the front of a crowded classroom at Columbia University and began teaching the third year of my undergraduate virology course. Twice a week we discussed the basic principles of virology, including how virions are built, how they replicate, and how they cause dis... Read More
Why is there such widespread fear of avian H5N1 influenza virus?
Why did Paul Keim, chair of the National Science Advisory Board for Biosecurity (NSABB) say “I can’t think of another pathogenic organism that is as scary as this one”. What lead Donald McNeil, writing about H5N1 in the New Yor... Read More
I hear from many readers that they routinely get the flu vaccine every year, yet they often contract the disease. I usually tell them that the vaccine is not perfect: it doesn’t protect everyone who gets it. Now we have the numbers to back up this statement, and they are not pretty.
Gentlemen, I think you'll find that Dylan Thomas was Welsh, not Irish. Though you are of course correct on his penchant for writing and
Dear TWiV Doctors,
I have one question and one co... Read More
The retrovirus XMRV arose during passage of a human prostate tumor in nude mice. The genomes of these mice contain two different proviral DNAs related to XMRV, pre-XMRV-1 and pre-XMRV-2, that recombined to produce XMRV that has been isolated from humans. Two other prostate cancer cell lines also... Read More
The fatality rate for human infections with avian influenza H5N1 is widely quoted at >50%, based on the number of deaths among the fewer than 600 cases confirmed by the World Health Organization. Wang, Parides, and Palese suggest that this number is an overestimate. Read More
Listening to the most recent Republican, I mean Tea Party, presidential debate, I was quite upset (for many reasons), but one of which was to listen to how Michelle Bachmann characterized the HPV vaccine as a "dangerous government injecti... Read More
Hello Men (and sometimes women) of TWiV!
I have read before that the human genome contains the genetic code of several thousand retroviruses. These retroviruses are in an inactive state, and are believed to be the product of infec... Read More
The mantle of world’s biggest virus has passed from Mimivirus to Megavirus. But in this case, size doesn’t matter. It’s the genes that these viruses share and do not share that make this story important. Read More
Vincent and Dickson discuss medical entomology with Robert W. Gwadz, Assistant Chief of the Laboratory of Malaria and Vector Research at NIAID.
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Did you know that your body is home to 10 times more microbes than human cells? Learn about the human microbiome and its fascinating practical applications. Speakers include Dr. Lita Proctor, Human Microbiome Project at NIH, Dr. Liliana Losada, J Craig Venter Institute, Rockville, MD, Dr. Jac... Read More
Felipe Guhl Nanneti es colombiano, nacido en Bogotá. Estudió biología y microbiología en la Universidad de los Andes en Bogotá y tiene grados avanzados en parasitología tropical, de la misma universidad... Read More