Genomes of non-defective viruses range in size from 2,400,000 bp of dsDNA (Pandoravirus salinus) to 1,759 bp of ssDNA (porcine circovirus). Are even smaller viral genomes possible? The subviral agents called viroids provide an answer to this question. Viroids, the smallest known pathogens, are naked, circular, single-stranded RNA molecules that do ...

On episode #319 of the science show This Week in Virology, the TWiVers review the outcomes of two recent phase 3 clinical trials of a quadrivalent dengue virus vaccine in Asia and Latin America. You can find TWiV #319 at www.microbe.tv/twiv.

Poliovirus by Jason Roberts The polio eradication and endgame strategic plan announced by the World Health Organization in 2014 includes at least one dose of inactivated poliovirus vaccine (IPV). Since 1988, when WHO announced the polio eradication plan, it had relied exclusively on the use of oral poliovirus vaccine (OPV). ...

On episode #318 of the science show This Week in Virology, the TWiV gang reviews ten fascinating, compelling, and riveting virology stories from 2014. You can find TWiV #318 at www.microbe.tv/twiv.

On episode #317 of the science show This Week in Virology, Vincent travels to Brazil and joins Eurico to speak with three four young virologists, Gustavo, Cintia, Tatiana, and Suellen, about their work and their prospects for careers in science. You can find TWiV #317 at www.microbe.tv/twiv.