The Difference Between Viruses and Bacteria

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Virus are basically just nucleic acids that replicate within a host. So there's, you know, the big argument, are they alive? Are they not? We're not going to answer today because even microbiologists can't agree. You can inactivate it with chemicals like formaldehyde and UV or by changing its chemical structure. But bacteria of course are live on their own. They have nutritional requirements which makes them different from viruses.

This is a special episode of Mindscape, thrown together quickly. Many thanks to Tara Smith for joining me on short notice. Tara is an epidemiologist, and a great person to talk to about the novel coronavirus (and its associated disease, COVID-19) pandemic currently threatening the world. We talk about what viruses are, how they spread, and a lot of the science behind virology and pandemics. We also take a practical turn, talking about what measures (washing hands, social distancing, self-isolation) are useful at combating the spread of the virus, and which (wearing masks) are probably not. Then we look to the future, to ask what the endgame here is; Tara suggests that the kind of drastic measure we are currently putting up with might last a long time indeed.

Tara Smith received her Ph.D. in microbiology from the University of Toledo. She is currently Professor of Epidemiology at the Kent State University College of Public Health. She has researched and written extensively about diseases such as ebola and MRSA. She is an active science communicator, and writes regular columns for SELF magazine.

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