Doctor Nina Pierpoint published an analysis based on three studies of the Delta variant, which show that the COVID-19 vaccines do not meet the requirements to be called a vaccine. They neither prevent infection nor the spread of the virus. The studies come from the US Centers for Disease Control and Prevention (CDC), which is the US national public health agency, from Oxford University and from the UK health authorities.

If the injections do not prevent infection or spread, and if the disease is no worse than a severe seasonal flu, and the vaccines have dangerous side effects, does then the benefit outweigh the risk of these COVID-19 vaccines? The main purpose of mandatory vaccination is to prevent others from becoming infected, but since vaccination neither prevents an individual from being infected nor from infecting others, Pierpoint concludes that mandatory vaccinations cannot be justified. Natural immunity, on the other hand, protects much better than the vaccine.

Source: Covid-19 Vaccine Mandates Are Now Pointless: Covid-19 vaccines do not keep people from catching the prevailing Delta variant and passing it to others,
https://theexpose.uk/wp-content/uploads/2021/09/Pierpont-Why-mandated-vaccines-are-pointless-final-1.pdf

Source: Morbidity and Mortality Weekly ReportMMWR / August 6, 2021 / Vol. 70 / No. 31 1059US Department of Health and Human Services/Centers for Disease Control and Prevention Outbreak of SARS-CoV-2 Infections, Including COVID-19 Vaccine Breakthrough Infections, Associated with Large Public Gatherings — Barnstable County, Massachusetts, July 2021,
https://www.cdc.gov/mmwr/volumes/70/wr/pdfs/mm7031e2-H.pdf

Source: Transmission of SARS-CoV-2 Delta Variant Among Vaccinated Healthcare Workers, Vietnam,
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3897733

Source: Impact of Delta on viral burden and vaccine effectiveness against new SARS-CoV-2 infections in the UK,
https://www.medrxiv.org/content/10.1101/2021.08.18.21262237v1