- ...that the stripes on tulips (examples pictured) that caused tulip mania were probably caused by a virus, but this was unknown to science at the time?
- ...that epidemiologist Li Lanjuan was the first to propose a lockdown of Wuhan during the 2019–20 coronavirus outbreak?
- ...that the human bocavirus is the fourth most commonly found virus in samples collected from the respiratory system?
- ...that research by Harold Ginsberg on adenoviruses led to the development of gene therapy, in which modified versions of viruses can be used to implant healthy versions of genes to treat disease?
- ...that the Tiverton fire of 1731 resulted in an increased incidence of smallpox?