- Apr 2022
-
twitter.com twitter.com
-
Sebastian Rushworth M.D. (2021, January 25). This graph shows the share of the Swedish population testing positive to antibodies against covid week on week. The results are pretty startling. Https://t.co/rye4WImrvl [Tweet]. @sebrushworth. https://twitter.com/sebrushworth/status/1353775606274654208
-
- Mar 2022
-
www.theguardian.com www.theguardian.com
-
Al Newman. (2022, March 8). @danaparish @jennybluebird2U To your point: Https://t.co/CsULpIACoI [Tweet]. @AlNewman_. https://twitter.com/AlNewman_/status/1501056062262333441
-
- Feb 2022
-
-
Su, Y., Yuan, D., Chen, D. G., Ng, R. H., Wang, K., Choi, J., Li, S., Hong, S., Zhang, R., Xie, J., Kornilov, S. A., Scherler, K., Pavlovitch-Bedzyk, A. J., Dong, S., Lausted, C., Lee, I., Fallen, S., Dai, C. L., Baloni, P., … Heath, J. R. (2022). Multiple Early Factors Anticipate Post-Acute COVID-19 Sequelae. Cell, 0(0). https://doi.org/10.1016/j.cell.2022.01.014
-
- Jan 2022
-
www.reuters.com www.reuters.com
-
Lapid, N. (2022, January 4). Covid Science: Virus leaves antibodies that may attack healthy tissues. Reuters. https://www.reuters.com/business/healthcare-pharmaceuticals/virus-leaves-antibodies-that-may-attack-healthy-tissues-b-cell-antibodies-2022-01-03/
Tags
- Omicron
- immune system
- infection
- vaccine
- self-attacking antibodies
- COVID-19
- science
- lang:en
- is:webpage
- antibodies
- B cells
- research
Annotators
URL
-
- Nov 2021
-
www.thelancet.com www.thelancet.com
-
Kojima, N., & Klausner, J. D. (2021). Protective immunity after recovery from SARS-CoV-2 infection. The Lancet Infectious Diseases, 0(0). https://doi.org/10.1016/S1473-3099(21)00676-9
-
- Oct 2021
-
www.nature.com www.nature.com
-
Gee, S., Chandiramani, M., Seow, J., Pollock, E., Modestini, C., Das, A., Tree, T., Doores, K. J., Tribe, R. M., & Gibbons, D. L. (2021). The legacy of maternal SARS-CoV-2 infection on the immunology of the neonate. Nature Immunology. https://doi.org/10.1038/s41590-021-01049-2
-
- Sep 2021
-
www.theguardian.com www.theguardian.com
-
Devlin, Hannah. “People with Chronic Conditions among Most at Risk from Covid Even after Jabs.” The Guardian, September 18, 2021, sec. World news. https://www.theguardian.com/world/2021/sep/18/people-with-chronic-conditions-among-most-at-risk-from-covid-even-after-jabs.
-
-
wwwnc.cdc.gov wwwnc.cdc.gov
-
Liu, W., Russell, R. M., Bibollet-Ruche, F., Skelly, A. N., Sherrill-Mix, S., Freeman, D. A., Stoltz, R., Lindemuth, E., Lee, F.-H., Sterrett, S., Bar, K. J., Erdmann, N., Gouma, S., Hensley, S. E., Ketas, T., Cupo, A., Cruz Portillo, V. M., Moore, J. P., Bieniasz, P. D., … Hahn, B. H. (2021). Predictors of Nonseroconversion after SARS-CoV-2 Infection. Emerging Infectious Diseases, 27(9), 2454–2458. https://doi.org/10.3201/eid2709.211042
-
-
twitter.com twitter.com
-
Hannah Davis 🌈 on Twitter: “New CDC study finds that 36% of COVID patients never seroconvert, meaning they NEVER make antibodies! #LongCovid This is a huge finding which we need to amplify broadly! Please retweet & send to providers, patients, support groups, #MedTwitter, etc. Https://t.co/gEne4dE0TQ 1/” / Twitter. (n.d.). Retrieved September 1, 2021, from https://twitter.com/ahandvanish/status/1432411002688184320?s=20
-
- Jul 2021
-
www.ema.europa.eu www.ema.europa.eu
-
PINHO, A. C. (2021, March 10). EMA starts rolling review of Eli Lilly antibodies bamlanivimab and etesevimab for COVID-19 [Text]. European Medicines Agency. https://www.ema.europa.eu/en/news/ema-starts-rolling-review-eli-lilly-antibodies-bamlanivimab-etesevimab-covid-19
-
-
bmcpublichealth.biomedcentral.com bmcpublichealth.biomedcentral.com
-
Drury, John, Guanlan Mao, Ann John, Atiya Kamal, G. James Rubin, Clifford Stott, Tushna Vandrevala, and Theresa M. Marteau. ‘Behavioural Responses to Covid-19 Health Certification: A Rapid Review’. BMC Public Health 21, no. 1 (24 June 2021): 1205. https://doi.org/10.1186/s12889-021-11166-0.
-
- May 2021
-
-
Mallapaty, S. (2021). Scientists zero in on long-sought marker of COVID-vaccine efficacy. Nature, d41586-021-01372–01376. https://doi.org/10.1038/d41586-021-01372-6
-
- Apr 2021
-
www.theguardian.com www.theguardian.com
-
Rukmini, S. (2021, April 21). India’s government has abandoned its citizens to face a deadly second wave alone. The Guardian. https://www.theguardian.com/commentisfree/2021/apr/21/indias-government-abandoned-citizens-deadly-second-covid-wave
-
-
psyarxiv.com psyarxiv.com
-
Morrow, Alison, Sara Jenks, and Becky Batchelor. ‘The Effect of Antibody Test Result Knowledge on Transmission Reducing Behaviours’. PsyArXiv, 13 April 2021. https://doi.org/10.31234/osf.io/unm7r.
-
-
www.theguardian.com www.theguardian.com
-
the Guardian. ‘How UK Doctor Linked Rare Blood-Clotting to AstraZeneca Covid Jab’, 13 April 2021. http://www.theguardian.com/society/2021/apr/13/how-uk-doctor-marie-scully-blood-clotting-link-astrazeneca-covid-jab-university-college-london-hospital.
-
- Mar 2021
-
theconversation.com theconversation.com
-
Rees, April, and Catherine Thornton. ‘COVID-19 Vaccines Do Not Make Women Infertile’. The Conversation. Accessed 7 February 2021. http://theconversation.com/covid-19-vaccines-do-not-make-women-infertile-153550.
-
- Feb 2021
-
twitter.com twitter.com
-
ReconfigBehSci. (2020, October 27). RT @EricTopol: I wish all these déjà vu reports of ‘disappearing antibodies’ would disappear. That is not a problem. Https://t.co/upsTpR1fU… [Tweet]. @SciBeh. https://twitter.com/SciBeh/status/1321407869976256512
-
-
sebastianrushworth.com sebastianrushworth.com
-
Here’s a graph they don’t want you to see. (2021, January 25). Sebastian Rushworth M.D. https://sebastianrushworth.com/2021/01/25/heres-a-graph-they-dont-want-you-to-see/
-
- Nov 2020
-
sebastianrushworth.com sebastianrushworth.com
-
Generally it takes a week or two after a person has been infected before they start to produce IgG, and with covid, you’re generally only infectious for about a week after you start to have symptoms, so antibody tests are not designed to find active infections. Instead the purpose is to see if you have had an infection in the past.
It takes a week or two for an infected person to start producing the antibody IgG which is the type of antibody that typically gets tested for.
[[Z: Antibody tests are only useful to see if you had an infection in the past]]
-
- Oct 2020
-
www.theguardian.com www.theguardian.com
-
Third of newborns with Covid infected before or during birth – study. (2020, October 15). The Guardian. http://www.theguardian.com/world/2020/oct/15/thirty-per-cent-of-newborn-babies-with-covid-contract-it-before-or-during-birth
-
-
-
For every one confirmed case, Redfield said, the CDC estimates that 10 more people have been infected.
Take away: While this estimate may be the most accurate at the time there are several reasons (addressed below) why any estimate provided at this time may be imprecise. As more data is accrued, including information on the immunological dynamics of the SARS-CoV2 antibodies, we should expect to see a more accurate estimate.
The claim: For every one confirmed case the CDC estimates that another 10 more people have been infected.
The evidence: This estimate was revealed in a press briefing with CDC Director Robert Redfield on June, 25, 2020. It is important to emphasize that this is an estimate extrapolated from the collective data of numerous seroprevalence surveys (antibody tests) performed in different locations across the U.S. While it is most definitely true that the reported case numbers are lower than the actual, given the prevalence of asymptomatic individuals that do not visit medical centers to be tested, the actual figure may be lower or higher than the estimate presented here due to a variety of factors including:
1) Areas surveyed: Indeed, it is known that the number of cases vary disproportionately across different areas of the U.S. According to the CDC, three types of seroprevalence surveys are commonly performed: large-scale geographic, community-level, and special populations. It is important to note that each survey may or may not be completely representative of the specific area yet alone the U.S. as a whole.
2)Type of antibody testing: The FDA reported on the performance of numerous EUA authorized serology tests. The conclusion is that each test has varying levels of accuracy and confidence intervals. As the estimate provided by Redfield was most likely obtained from data derived from the specific test used at each individual surveillance site, the figure may be further skewed by the accuracy of each test.
3)Origin of blood samples: The type of individuals from which the blood samples tested originated may have a significant effect on the Redfield’s estimate. For example, if certain surveillance sites are exclusively testing samples from sick patients, the estimate may be an overestimate as a population presenting COVID symptoms is more likely to test positive than a healthy-looking population. Therefore, a detailed characterization of the individuals from which the blood was obtained would be needed in order to uphold accuracy.
4)Time of tests: As the advent of antibodies can occur a week or longer post-infection, individuals who have recently been infected may not have detectable levels of antibodies and may come up as false negatives. It is also possible for an individual to simply not produce enough antibodies to be detectable by a given serology test. Furthermore, a recent paper published in medrxiv suggests that certain antibodies have reduced titers within 50 days of symptom onset.
Take away: While this estimate may be the most accurate at the time there are several reasons (addressed below) why any estimate provided at this time may be imprecise. As more data is accrued, including information on the immunological dynamics of the SARS-CoV2 antibodies, we should expect to see a more accurate estimate.
The claim: For every one confirmed case the CDC estimates that another 10 more people have been infected.
The evidence: This estimate was revealed in a press briefing with CDC Director Robert Redfield on June, 25, 2020. It is important to emphasize that this is an estimate extrapolated from the collective data of numerous seroprevalence surveys (antibody tests) performed in different locations across the U.S. While it is most definitely true that the reported case numbers are lower than the actual, given the prevalence of asymptomatic individuals that do not visit medical centers to be tested, the actual figure may be lower or higher than the estimate presented here due to a variety of factors including:
1) Areas surveyed: Indeed, it is known that the number of cases vary disproportionately across different areas of the U.S. According to the CDC, three types of seroprevalence surveys are commonly performed: large-scale geographic, community-level, and special populations (1). It is important to note that each survey may or may not be completely representative of the specific area yet alone the U.S. as a whole.
2)Type of antibody testing: The FDA reported on the performance of numerous EUA authorized serology tests (2). The conclusion is that each test has varying levels of accuracy and confidence intervals. As the estimate provided by Redfield was most likely obtained from data derived from the specific test used at each individual surveillance site, the figure may be further skewed by the accuracy of each test.
3)Origin of blood samples: The type of individuals from which the blood samples tested originated may have a significant effect on the Redfield’s estimate. For example, if certain surveillance sites are exclusively testing samples from sick patients, the estimate may be an overestimate as a population presenting COVID symptoms is more likely to test positive than a healthy-looking population. Therefore, a detailed characterization of the individuals from which the blood was obtained would be needed in order to uphold accuracy.
4)Time of tests: As the advent of antibodies can occur a week or longer post-infection, individuals who have recently been infected may not have detectable levels of antibodies and may come up as false negatives. It is also possible for an individual to simply not produce enough antibodies to be detectable by a given serology test. Furthermore, a recent paper published in medrxiv suggests that certain antibodies have reduced titers within 50 days of symptom onset (3).
To conclude, while this estimate may be the most accurate at the time given the available data, many factors can affect the figure and, in some instances, more information is needed as it is unclear exactly how this number was obtained from the information provided in the press briefing.
Sources: 1) https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/about-serology-surveillance.html
3) https://www.medrxiv.org/content/10.1101/2020.07.09.20148429v1
-
- Sep 2020
-
www.cnn.com www.cnn.com
-
If you were infected with the novel coronavirus, a new study suggests that your immunity to the virus could decline within months.
Take away: Waning antibodies don’t necessarily mean that immunity will also decrease, because other components of the immune system retain “memory” for an infection and can combat invaders even after antibody counts have gone down.
The claim: “If you were infected with the novel coronavirus, a new study suggests that your immunity to the virus could decline within months.”
The evidence: This study [1], along with others [2], does indeed show evidence for declining neutralizing antibodies within a few months after infection; however, antibody counts alone are not enough to predict whether a patient will have durable immunity to a virus. Neutralizing antibodies are generated by B cells, a type of immune cell that patrols the body looking for their molecular targets. Some B cells carry “memory,” a quality that allows them to respond quickly when they see a virus or pathogen that they have encountered before, which allows them to pump out large quantities of antibody rapidly to fight the infection [3]. It’s actually normal in many viral infections for antibody levels within the blood to wane over time; the real concern is whether there are enough memory B cells to generate new antibodies at a moment’s notice.
In addition to B cells, a second type of immune cell known as a “T cell” is critical for predicting durable immunity. Like B cells, some T cells carry “memory” and can patrol the body for years looking for their targets. Some T cells play a role in helping B cells produce antibodies quickly, and other T cells can actually target the infection directly [4]. Studies have now shown that T cell responses can persist after SARS-CoV-2 infection, and some patients even have T cells that can react to SARS-CoV-2 due to “cross-reactivity,” likely from preexisting immunity from common cold viruses that share some characteristics of SARS-CoV-2. While this cross-reactivity does not guarantee immunity, the presence of robust B and T cell responses is important, and could be more predictive than presence of antibodies alone.
This article, written by a two well-known immunologists and COVID-19 experts at Yale University, provides a nice summary of the data that puts these claims in context [6].
-
-
www.scientificamerican.com www.scientificamerican.com
-
Ponchner, D. (n.d.). Costa Rica Readies Horse Antibodies for Trials as an Inexpensive COVID-19 Therapy. Scientific American. Retrieved September 8, 2020, from https://www.scientificamerican.com/article/costa-rica-readies-horse-antibodies-for-trials-as-an-inexpensive-covid-19-therapy/
Tags
- is:news
- clinical trial
- COVID-19
- therapy
- lang:en
- Costa Rica
- intervention
- low-cost
- human research
- horse antibodies
- immunology
- development
Annotators
URL
-
-
psyarxiv.com psyarxiv.com
-
Lewandowsky, Stephan, Simon Dennis, Amy Perfors, Yoshihisa Kashima, Joshua White, Paul Michael Garrett, Daniel R. Little, and Muhsin Yesilada. ‘Public Acceptance of Privacy-Encroaching Policies to Address the COVID-19 Pandemic in the United Kingdom’. Preprint. PsyArXiv, 4 September 2020. https://doi.org/10.31234/osf.io/njwmp.
Tags
- time limited
- widespread acceptance
- infected
- UK
- tracking technology
- public
- willingness
- co-location tracking
- immunity passport
- United Kingdom
- privacy-encroaching policy
- COVID-19
- opt-out clause
- lang:en
- social distancing
- health agencies
- public acceptance
- contact
- antibodies
- is:preprint
Annotators
URL
-
-
www.bbc.co.uk www.bbc.co.uk
-
‘Schools “no Greater Risk” for Children and Staff’. BBC News, 5 September 2020, sec. Health. https://www.bbc.com/news/health-54025708.
-
- Aug 2020
-
www.theatlantic.com www.theatlantic.com
-
Yong, Ed. ‘Immunology Is Where Intuition Goes to Die’. The Atlantic, 5 August 2020. https://www.theatlantic.com/health/archive/2020/08/covid-19-immunity-is-the-pandemics-central-mystery/614956/.
-
-
www.nber.org www.nber.org
-
Aum, S., Lee, S. Y. (Tim), & Shin, Y. (2020). Inequality of Fear and Self-Quarantine: Is There a Trade-off between GDP and Public Health? (Working Paper No. 27100; Working Paper Series). National Bureau of Economic Research. https://doi.org/10.3386/w27100
-
- Jul 2020
-
www.newscientist.com www.newscientist.com
-
Vaughan, A. (n.d.). Which covid-19 treatments work and how close are we to getting more? New Scientist. Retrieved 31 July 2020, from https://www.newscientist.com/article/2250176-which-covid-19-treatments-work-and-how-close-are-we-to-getting-more/
-
-
www.newsweek.com www.newsweek.com
-
EDT, Bryan Kirk On 7/17/20 at 12:49 PM. ‘Parents Consider “COVID Mixers” to Infect Healthy Children and Build Herd Immunity’. Newsweek, 17 July 2020. https://www.newsweek.com/parents-mull-covid-mixers-infect-healthy-children-build-herd-1518661.
-
- May 2020
-
www.sciencemediacentre.org www.sciencemediacentre.org
-
Expert comments about herd immunity | Science Media Centre. (n.d.). Retrieved April 14, 2020, from https://www.sciencemediacentre.org/expert-comments-about-herd-immunity/
-
-
www.reddit.com www.reddit.com
-
r/medicine - Are “immunity certificates” actually feasible? Thoughts from an expert on viral antibodies. (n.d.). Reddit. Retrieved April 21, 2020, from https://www.reddit.com/r/medicine/comments/g1ty3g/are_immunity_certificates_actually_feasible/
-
-
threadreaderapp.com threadreaderapp.com
-
Thread by @taaltree: Antibody tests are coming online. Never before have humans needed to understand Bayes rule more. Let’s talk about why it’s critical NOT to a…. (n.d.). Retrieved April 21, 2020, from https://threadreaderapp.com/thread/1248467731545911296.html
-
-
www.theguardian.com www.theguardian.com
-
editor, S. B. H. (2020, April 20). WHO warns that few have developed antibodies to Covid-19. The Guardian. https://www.theguardian.com/society/2020/apr/20/studies-suggest-very-few-have-had-covid-19-without-symptoms
-
- Apr 2020
-
statmodeling.stat.columbia.edu statmodeling.stat.columbia.edu
-
Bernheim, A., Mei, X., Huang, M., Yang, Y., Fayad, Z. A., Zhang, N., Diao, K., Lin, B., Zhu, X., Li, K., Li, S., Shan, H., Jacobi, A., & Chung, M. (2020). Chest CT Findings in Coronavirus Disease-19 (COVID-19): Relationship to Duration of Infection. Radiology, 200463. https://doi.org/10.1148/radiol.2020200463
-
-
www.medrxiv.org www.medrxiv.org
-
Adams, E. R., Anand, R., Andersson, M. I., Auckland, K., Baillie, J. K., Barnes, E., Bell, J., Berry, T., Bibi, S., Carroll, M., Chinnakannan, S., Clutterbuck, E., Cornall, R. J., Crook, D. W., Silva, T. D., Dejnirattisai, W., Dingle, K. E., Dold, C., Eyre, D. W., … Sanchez, V. (2020). Evaluation of antibody testing for SARS-Cov-2 using ELISA and lateral flow immunoassays. MedRxiv, 2020.04.15.20066407. https://doi.org/10.1101/2020.04.15.20066407
-