Makes you wonder..they just announced case in Rome with others being monitored. He gets into crowds a lot.
We were in Rome in October. If he went to any tourist spot they are crammed in like sardines...long lines, literally shoulder to shoulder in the sistine chapel and St. Peter's square when the pope talks. It's possible the pope has it too!
Correspondence, Feb 27:
Secondary attack rate and superspreading events for SARS-CoV-2
Yang Liu, Rosalind M. Eggo, Adam J. Kucharchi
“If transmission is stratified by contacts within and outside of the household, the relationship between R0 and household risk is: R0=SARHNH + SARCNC, where SARH and SARC are the secondary attack rates within household and wider community (ie, outside household), respectively, and NH and NC are the numbers of at-risk contacts made, respectively.3 An infection with a high household SAR but a modest R0 would therefore suggest transmission is driven by a relatively small number of high-risk contacts. A large household SAR further suggests that between-household transmission risk is lower; otherwise the observed R0 would be larger....”
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)30462-1/fulltext