Viral origins
https://www.ub.edu/web/ub/en/menu_eines/noticies/2020/06/042.html
https://www.medrxiv.org/content/10.1101/2020.06.13.20129627v1
SARS-CoV-2 detected in waste waters in Barcelona on 12th March, 2019
Wuhan, Early December, 2019
Europe, France late January
Cases in France, late 2019
First case in Barcelona, reported in 25th February 2020
Even in respiratory samples, infectivity is only associated with very high genome copy numbers
Method
2 plants in Barcelona
Frozen 800 ml archival samples
2018 (January-March)
2019 (January, March, September-December)
All samples came out to be negative for the presence of SARS-CoV-2 genomes
With the exception of March 12, 2019, in which both IP2 and IP4 target assays were positive
Next detection, 15th January
41 days before first official case in Spain on 25th February
Sentinel surveillance of SARS-CoV-2 in wastewater would enable adoption of immediate measures in the event of future COVID-19 waves.
Albert Bosch, president, Spanish Society of Virology
Barcelona receives many visitors for both tourist and professional reasons
it is possible for a similar situation to have taken place in other parts of the world
since most of the COVID-19 cases show a similar symptomatology to the flu,
those cases could have been disguised as an undiagnosed flu
Source
https://shorturl.fm/0x2hL
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