There is more than one reason, but one major reason is that lockdowns have never been shown to be particularly effective. And this lack of success in containment must also be weighed with the very real costs of forced isolation. This was explained in a 2006 paper in Biosecurity and Bioterrorism called “Disease Mitigation Measures in the Control of Pandemic Influenza” by Thomas V. Inglesby, Jennifer B. Nuzzo, Tara O’Toole, and D.A. Henderson. The authors conclude:
There are no historical observations or scientific studies that support the confinement by quarantine of groups of possibly infected people for extended periods in order to slow the spread of influenza. A World Health Organization (WHO) Writing Group, after reviewing the literature and considering contemporary international experience, concluded that “forced isolation and quarantine are ineffective and impractical.” Despite this recommendation by experts, mandatory large-scale quarantine continues to be considered as an option by some authorities and government officials.
The interest in quarantine reflects the views and conditions prevalent more than 50 years ago, when much less was known about the epidemiology of infectious diseases and when there was far less international and domestic travel in a less densely populated world. It is difficult to identify circumstances in the past half-century when large-scale quarantine has been effectively used in the control of any disease. The negative consequences of large-scale quarantine are so extreme (forced confinement of sick people with the well; complete restriction of movement of large populations; difficulty in getting critical supplies, medicines, and food to people inside the quarantine zone) that this mitigation measure should be eliminated from serious consideration.
Not surprisingly, then, it’s now becoming apparent that lockdowns don’t work when actually tried. Earlier this month, for example, Donald Luskin noted in the Wall Street Journal:
Measuring from the start of the year to each state’s point of maximum lockdown—which range from April 5 to April 18—it turns out that lockdowns correlated with a greater spread of the virus. States with longer, stricter lockdowns also had larger Covid outbreaks. The five places with the harshest lockdowns—the District of Columbia, New York, Michigan, New Jersey and Massachusetts—had the heaviest caseloads.
NaturalBlaze The Evidence Keeps Piling Up: Lockdowns Don’t Work