Re: Coronavirus
Posted: Thu Nov 18, 2021 8:34 am
Which is more effective: "natural immunity" from having been infected by COVID-19, or having taken an mRNA COVID-19 vaccine from Pfizer or Moderna?
WaPo: The vaccine.
(Same article also mentions that the unvaxxed are 11x more likely to die from covid than vaxxed.)
(Same article also also says that in either case, the antibodies granted last not much more than 6 months. So be careful.)
Here's a direct link to CDC information: they, too, say that the vaccine is better.
Here's another study showing the vaccine to be more effective:
Here's another link showing the vaccine to be more effective. This one also says that the antibodies you acquire from having been effective exit your body much faster than those from the vaccine:
In2, I probably won't convince you that vaccines are good with the above links. But one thing all the sites say is that any "natural immunity" from having been infected doesn't last forever. If you got infected with COVID-19 a year ago, you likely are no longer protected from catching it again. So I hope you'll be careful and take precautions to avoid exposure. I disagree with you about some issues, but I want you to be healthy and safe.
WaPo: The vaccine.
https://www.washingtonpost.com/health/2 ... -immunity/In comparing the two types of immunity, scientists said research shows vaccination provides a “higher, more robust, and more consistent level of immunity to protect people from COVID-19 than infection alone.”
(Same article also mentions that the unvaxxed are 11x more likely to die from covid than vaxxed.)
(Same article also also says that in either case, the antibodies granted last not much more than 6 months. So be careful.)
Here's a direct link to CDC information: they, too, say that the vaccine is better.
https://www.cdc.gov/coronavirus/2019-nc ... unity.htmlThe immunity provided by vaccine and prior infection are both high but not complete (i.e., not 100%).
Whereas there is a wide range in antibody titers in response to infection with SARS-CoV-2, completion of a primary vaccine series, especially with mRNA vaccines, typically leads to a more consistent and higher-titer initial antibody response.
Here's another study showing the vaccine to be more effective:
https://jamanetwork.com/journals/jama/f ... le/2783797Higher antibody titers were observed in participants vaccinated with 2 doses of mRNA-1273 compared with those vaccinated with BNT162b2 (geometric mean titer [GMT], 3836 U/mL [95% CI, 3586-4104] vs 1444 U/mL [95% CI, 1350-1544]; P < .001) (Figure, A).
Previously infected participants had higher antibody titers (GMT, 9461 U/mL [95% CI, 8494-10 539]) compared with previously uninfected participants (GMT, 1613 U/mL [95% CI, 1539-1690]) (P < .001). In both groups, those vaccinated with mRNA-1273 had higher antibody titers compared with those vaccinated with BNT162b2 (previously uninfected: GMT, 2881 U/mL [95% CI, 2721-3051] vs 1108 U/mL [95% CI, 1049-1170]; P < .001; previously infected: GMT, 10 708 U/mL [95% CI, 9311-12 315] vs 8174 U/mL [95% CI, 6923-9649]; P = .01). The difference in antibody levels according to previous infection was higher than the difference between the 2 mRNA vaccines (Figure, B, and Table).
Here's another link showing the vaccine to be more effective. This one also says that the antibodies you acquire from having been effective exit your body much faster than those from the vaccine:
https://www.henryford.com/blog/2021/10/ ... protection1. Antibody protection from the vaccines last longer.
If you contract COVID-19 and develop protective antibodies, those antibodies may not be detectable after 90 days. “And if the antibody levels following infection are low, the antibodies may last only 60 days,” says Dr. Cunningham.
Vaccine antibodies, however, last six months or longer. Studies from the Centers for Disease Control and Prevention (CDC) suggest that antibody protection from the Pfizer and Moderna vaccines decreases after eight months, and after that, the vaccines are still highly effective against hospitalization. In one study, data from the state of New York showed that vaccine effectiveness decreased from 91.7 to 79.8% against infection—and 79.8% is still very effective.
In2, I probably won't convince you that vaccines are good with the above links. But one thing all the sites say is that any "natural immunity" from having been infected doesn't last forever. If you got infected with COVID-19 a year ago, you likely are no longer protected from catching it again. So I hope you'll be careful and take precautions to avoid exposure. I disagree with you about some issues, but I want you to be healthy and safe.