We've already achieved herd immunity through a combination of antibodies and T-cell immunity. It's why death rates continue to flatten (despite herculean efforts to keep them inflated) and why antibodies are becoming harder to find in more recently tested populations. It's even likely that the population already had some form of herd immunity prior to the arrival of the novel coronavirus. The more evidence we get, the more obvious it becomes that the governmental and societal response to novel coronavirus was an act of sheer insanity and stupidity.Scientists focus on how immune system T cells fight coronavirus in absence of antibodies
https://www.reuters.com/article/us-h...-idUSKBN24B1D8
(Reuters) - As scientists question whether the presence, or absence, of antibodies to the novel coronavirus can reliably determine immunity, some are looking to a different component of the immune system, known as T cells, for their role in protecting people in the pandemic...
...“There is mounting evidence that people exposed to the virus have a transient (short-lived) antibody response, or have a T cell response in spite of a minor or absent antibody response,” Dr Alessandro Sette, professor and member of the La Jolla Institute’s Infectious Disease and Vaccine Center in California, told Reuters...
...“T cells are often important in controlling viral infections. We are seeing evidence of that,” John Wherry, director of the University of Pennsylvania’s Institute for Immunology, told Reuters...
...A study led by the La Jolla Institute detected T cells that reacted to SARS-CoV-2 in about half of stored blood samples collected between 2015 and 2018, suggesting that the immune system cells developed after previous infection with circulating common cold coronaviruses, and that they might help protect against the new virus.