Something in the Air Tonight?

A study from Imperial College London deliberately infected volunteers with the initial version (before the variants emerged) of the Covid19 virus (https://www.theguardian.com/world/2022/feb/02/exposure-to-one-nasal-droplet-enough-for-covid-infection-study). It was found that a single nasal droplet was sufficient to infect a volunteer. The volunteers developed symptoms of infection very quickly (often within 2 days of encountering the virus). Infected individuals were at their most infectious 5 days after exposure. It seems very likely that the variants will have slashed the required amount of viral exposure as well as speeding up the progression of the infection/ the individual's infectiveness.