I am studying the prevalence of SARS-Cov-2 in a tertiary hospital in Santiago de Chile, my first data report an 11% prevalence in a highly complex hospital in the northern area of Santiago. (Pre-print study)
Please check our slide prooving the existance of common "Zero source" of the current COVID-19 pandemic. The rest works concerning the issue can be found in my profile.
Poster Evidence from Astrobiology for COVID-19 cosmic origin