Hi Abraham1, your link of (https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(21)00648-4/fulltext) has a problem. Both times in this thread when you posted the link the final ")" got accidentally included into the link, thus preventing the link from loading the page. However, after I deleted the ")" then what remained of the link worked. [I wasn't able to load it until a short while ago, after I discovered the cause of the problem.]
The article partially supports what you said about the Covid-19 vaccines not making a difference - but only in some contexts. The article also says the Covid-19 vaccines provide some degree of protection in some regards. The science journal article article in part says the following (I have added some boldface for emphasis of statements saying the vaccines provide some protection).
"Interpretation
Vaccination reduces the risk of delta variant infection and accelerates viral clearance. Nonetheless, fully vaccinated individuals with breakthrough infections have peak viral load similar to unvaccinated cases and can efficiently transmit infection in household settings, including to fully vaccinated contacts. Host–virus interactions early in infection may shape the entire viral trajectory.
...
Introduction
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Vaccination was found to be effective in reducing household transmission of the alpha variant (B.1.1.7) by 40–50%, 1 and infected, vaccinated individuals had lower viral load in the upper respiratory tract (URT) than infections in unvaccinated individuals, 2 which is indicative of reduced infectiousness. 3 , 4 However, the delta variant (B.1.617.2), which is more transmissible than the alpha variant, 5 , 6 is now the dominant strain worldwide. After a large outbreak in India, the UK was one of the first countries to report a sharp rise in delta variant infection. Current vaccines remain highly effective at preventing admission to hospital and death from delta infection. 7 However, vaccine effectiveness against infection is reduced for delta, compared with alpha, 8 , 9 and the delta variant continues to cause a high burden of cases even in countries with high vaccination coverage. ....
Discussion
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Our findings help to explain how and why the delta variant is being transmitted so effectively in populations with high vaccine coverage. Although current vaccines remain effective at preventing severe disease and deaths from COVID-19, our findings suggest that vaccination alone is not sufficient to prevent all transmission of the delta variant in the household setting, where exposure is close and prolonged. Increasing population immunity via booster programmes and vaccination of teenagers will help to increase the currently limited effect of vaccination on transmission, but our analysis suggests that direct protection of individuals at risk of severe outcomes, via vaccination and non-pharmacological interventions, will remain central to containing the burden of disease caused by the delta variant."