From NATURE, the preeminent science journal.
New study shows that LOCKDOWNS WORK AT REDUCING COVID INFECTION
From the study:
"Wuhan had been under lockdown measures from January 23 until April 8, 2020."
"Here, we describe a city-wide SARS-CoV-2 nucleic acid screening programme between May 14 and June 1, 2020 in Wuhan."
" The prevalence of SARS-CoV-2 infection in Wuhan was therefore very low five to eight weeks after the end of lockdown."