This earlier origins hypothesis article is a branch from the SARS-CoV-2 Origins page.
Fort Detrick in Maryland has long housed infectious agents being researched by military scientists.
Although mRNA vaccines had never been successful, both Pfizer and Moderna designed mRNA vaccines independently within days of receiving SARS-CoV-2 genomic sequences in January, 2020.2) 3)
In 2019, an illness first termed VAPI (changed to EVALI) was noted in the U.S., and was blamed on vaping and e-cigarettes. The illness shares symptomatic features with COVID-19, and resulting hospitalizations formed an ordinary viral infection curve.4)
Sewage samples from Barcelona, Spain from May, 2019.9)
Multiple studies have found SARS-CoV-2 antibodies in pre-pandemic serums in multiple nations.
In a study published in February, 2021, scientists found IgG neutralizing antibodies in serums collected in France from November, 2019, signaling a latest possible outbreak date in France.10)
In a preprint posted on November 13, 2021, scientists note SARS-CoV-2 antibodies in samples as far back as September 3, 2019. There were no samples tested prior to September, 2019, so it is unclear how far back the presence of antibodies might go. These patients were scattered in cities around Italy.11)
The Times of Israel reported in April, 2020 that U.S. intelligence was already contacting other nations and organizations about the outbreak in Wuhan in Novermber, 2019.12)