The Guardian: Coronavirus detected on particles of air pollution

[Celerity]

Exclusive: Scientists examine whether this route enables infections at longer distances

https://www.theguardian.com/environment/2020/apr/24/coronavirus-detected-particles-air-pollution

Coronavirus has been detected on particles of air pollution by scientists investigating whether this could enable it to be carried over longer distances and increase the number of people infected. The work is preliminary and it is not yet known if the virus remains viable on pollution particles and in sufficient quantity to cause disease.

The Italian scientists used standard techniques to collect outdoor air pollution samples at one urban and one industrial site in Bergamo province and identified a gene highly specific to Covid-19 in multiple samples. The detection was confirmed by blind testing at an independent laboratory.

Leonardo Setti at the University of Bologna in Italy, who led the work, said it was important to investigate if the virus could be carried more widely by air pollution. “I am a scientist and I am worried when I don’t know,” he said. “If we know, we can find a solution. But if we don’t know, we can only suffer the consequences.”

Two other research groups have suggested air pollution particles could help coronavirus travel further in the air. A statistical analysis by Setti’s team suggests higher levels of particle pollution could explain higher rates of infection in parts of northern Italy before a lockdown was imposed, an idea supported by another preliminary analysis. The region is one of the most polluted in Europe.

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[sop]

1. When scientists study this pandemic they'll likely conclude it was anthropogenic in origin.

[Bernardo de La Paz]

3. Already discovered NOT anthropogenic. It originated in bats; may have passed through pangolins. nt

[sop]

4. And likely disseminated by human activity, like air pollution.

[Bernardo de La Paz]

2. Initial viral load seems to be important, so a few virus particles may not cause disease

... or mild enough to be asymptomatic and probably so mild to be non-contagious, effectively. But I am only speculating.

[dalton99a]

5. Wuhan before the lockdown: