In case of herd immunity, are they forgotten the consequences of cytokine storm? Again you cannot get enough good results (are they ready to lose huge population?). And there are number of cases, in which people have been infected twice.
Yes. In either circumstances i.e.,with or without cytokine storm there will be an increase risk of infection as well as mortalities.
You can follow these article :
https://www.theguardian.com/world/2020/apr/12/documents-contradict-uk-government-stance-on-covid-19-herd-immunity
https://www.healthline.com/health/herd-immunity
https://www.reactgroup.org/news-and-views/news-and-opinions/year-2020/impact-of-covid-19-on-vaccine-preventable-diseases-and-antibiotic-resistance/
With a high mortality infection (10%) like the one produced by COVID 19 , plus the lack of vaccine, the concept of herd immunity us ridiculous. Besides, there is no proof that this virus induces lasting immunologic defenses.
Concerning becoming Covid-19 infected a second time & presenting with disease.
In Sweden, that has a strict identification and tracking system, Dr. Anders Tegnell, the state epidemiologist who devised the country’s coronavirus response, said that so far (by possibly early May) not one person from Sweden has had COVID-19 twice.
https://www.ocregister.com/2020/05/10/10-takeaways-from-swedens-controversial-approach-to-the-coronavirus-pandemic/
We really can’t depend on herd immunity until we get either enough people infected, or enough people vaccinated. That means either a vaccine is developed and the vast majority of people become immune to the virus, or 70-80% of people contract the virus through community spread and develop antibody protection, indirectly protecting the rest of the population that is not yet immune to the virus..
Herd immunity is a distant dream. One must focus on providing more useful preventive measures like an effective vaccine and more specific antivirals. Social distancing and personal protection are crucial. Also, Individual immunity plays an important role.