quote:
Large scale study display the kinetics of SARS-CoV-2 IgG antibodies present in individuals vaccinated with two doses of mRNA vaccine vs. unvaccinated patients who had recovered from the disease: initial levels of antibody are much higher in vaccinated patients, but decrease faster.

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Takeaway: Protection is better on the front end if you've had the shot vs just getting sick with the virus. However, the opposite is true on the back end.

I also noticed you didn't post the bottom half of the article which essentially gives conflicting information. Link to the whole article

quote:
Recent real-world U.K. data suggests that people were best protected against the coronavirus when they got the COVID-19 vaccine. However, protection from the delta variant “was higher when people had previously caught COVID-19” after they had been vaccinated, too, the researchers said. This applies to those who were infected with COVID-19 during the pandemic and then later got fully vaccinated.

That said, the researchers said it would be “completely irresponsible” for people to purposefully get COVID-19 after they’ve gotten vaccinated since they can still end up hospitalized. the study’s lead author Sarah Walker told Business Insider.

Recent data from the Centers for Disease Control and Prevention found that 99.999% of fully vaccinated Americans did not experience a breakthrough COVID-19 case that led to hospitalization or death, as I wrote for the Deseret News.

Takeaway #1:
Highest protection= Covid diagnosis + Shot
Next best protection= Shot only
Worst protection= No shot

Takeaway #2: Hospitalization is still possible despite having been vaccinated.

Takeway #3: I searched the CDC website for that bit about 99.999% of vaccinate people not experiencing breakthrough illness, but couldn't actually find anything to back that up. His links didn't take you to any data to suggest that's actually true.

Link to the Study

Quote from the study:

quote:
Effectiveness of two doses remains at least as great as protection afforded by prior natural infection. The dynamics of immunity following second doses differed significantly between BNT162b2 and ChAdOx1, with greater initial effectiveness against new PCR-positives but faster declines in protection against high viral burden and symptomatic infection with BNT162b2. There was no evidence that effectiveness varied by dosing interval, but protection was higher among those vaccinated following a prior infection and younger adults. With Delta, infections occurring following two vaccinations had similar peak viral burden to those in unvaccinated individuals. SARS-CoV-2 vaccination still reduces new infections, but effectiveness and attenuation of peak viral burden are reduced with Delta.

It's also important to note that neither of the studies from this article are peer-reviewed. However, here are a lot of interesting charts on the "full text" tab if you really want to get into the weeds.