Infection requires a certain level of exposure that you're unlikely (I would say, impossible) to reach merely by touching (unless it's a droplet and you shove it up your nose or something...).
Picking your nose, sure, but also rubbing your eyes or putting your finger on your lips in a thoughtful gesture.
"Unlikely" is certainly true, but different people have different risk tolerances. And if it were really as simple as microwaving the book, this would be pretty reasonable!
The virus needs to settle in the airways to reach the level of infection.
I understand people's reaction, it's hard to sort all the messages from the media & health authorities, but it's still sad that so many have seemingly abandoned common sense.
> On Jan 22, Guangfa Wang, a member of the national expert panel on pneumonia, reported that he was infected by 2019-nCoV during the inspection in Wuhan.2
> He wore an N95 mask but did not wear anything to protect his eyes. Several days before the onset of pneumonia, Wang complained of redness of the eyes. Unprotected exposure of the eyes to 2019-nCoV in the Wuhan Fever Clinic might have allowed the virus to infect the body.2
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