Millä perusteella? Jos tahtomattasi jalostat viruskantaa, joka tarttuu vain kerran piikitettyyn, ei se silloin automaattisesti valikoidu sellaiseksi, että tarttuu kahdestikin piikitettyyn. Sama virus se on joka rokotetunkin tartuttaa 5% tai 40% todennäköisyydellä vai miten ne nyt menee.
Toki se nostaa tuota riskiä, että osa on rokotettu kunnolla (niin hyvin kuin voi eli kahdesti) ja osa ei mutta sille nyt vaan ei voi mitään. Viruksen mutaatio mahdollisesti ensimmäiset rokotteet ohittavaksi voi estää vain rokottamalla koko planeetan ja silloin puhumme koko viruksen poistamisesta kierrosta.
Virologit ovat eri mieltä:
Britain gambles on Covid-19 vaccines, upping the stakes for the rest of usPaul Bieniasz of Rockefeller University is one of those who is watching the evolving situation in Britain with dread. A retrovirologist who turned from HIV research to work on SARS-2, Bieniasz is studying how the virus acquires mutations that allow it to evade the protective antibodies people develop when they have contracted Covid-19, or when they have been vaccinated against it.
Bieniasz believes Britain is replicating in people the experiments he’s been doing in his lab — and could be fostering vaccine-resistant forms of the virus.
On New Year’s Day he posted a short, sarcastic treatise — “Musings of an anonymous, pissed off virologist”— on Twitter outlining how one could go about rendering Covid vaccines “impotent,” if that was one’s goal. Giving millions of people who are at daily risk of contracting the disease incomplete protection by delaying the second dose of vaccine was key, he suggested.

