John writes: Thank you for your service. Microbe.tv has been an important part of my life.  I’m 71 years old. Due to colon cancer I’ve lost my spleen, pancreas, half of one lung and a…

Brea writes: Hello TWIV and thank you for all you do! Flagstaff, AZ – partly cloudy and 60°F  Question for the covid clinical updates: If you are fully vaccinated and exposed to covid, does it…

Shane Crotty returns to TWiV to review the immunology of COVID-19, including differences between infection and vaccination, increased breadth of antibodies after infection followed by vaccination, the roles of T cells, and whether booster vaccinations are needed.

TIffaney writes: Twivers, Thank you so much for your reliable, reasoned and accessible science podcast. I love your banter and humor, which only makes the in depth information more enjoyable. I always listen to the…

The meteorologicomaniacs discuss the COVID-19 pandemic global death toll, effectiveness of vaccines against the delta variant, and how analysis of ancient viral DNA reveals that two pathogenic human viruses were brought into Mexico during the transatlantic slave trade.

Jeff writes: My wife and I are both scientists, and we are having a serious scientific disagreement. By studying the literature, she has decided that one can be infectious without the tests detecting the infection….

Sam writes: Twiv, I am writing seeking advice to address many of the vaccine concerns I have heard. I work as a nurse in an intensive care unit and my hospital has recently announced they…

The TWiV team explains what the Biden report on SARS-CoV-2 origins did not: evidence that the virus came from Nature, not a lab; and reveals new coronaviruses in rodents that inhabit populated areas in southern China.

Marcia writes: Daniel, Thanks for your clinical updates through the TWIV podcasts I’ve been following since the SARS CoV-2 pandemic became prevalent in the US in March 2020. My 38-year-old son has a condition called…