your statement is unfounded and illogical b.s. and it contradicts not only what is written in the report... but even the Summary from the CDC. 1. Nothing says the sailors will not not get antibodies in the future either from a re-infection or if they simply take longer to develop them. Nothing says that these sailors or our general population could not get to 60 70 or 80 percent of antibodies with a second wave of infections. 2. You don't know that the general population would not get antibodies at a higher rate than sailors. 3. You don't know the actual level needed for herd immunity. Those estimates of 60 to 70 percent are guesses based on spread rate. None of those early models were accurate. You were the one who misrepresented the study.... it said nothing about herd immunity being a myth. Everything about the study said it was promising for developing immunity. so in addition to the quote from the paper... Here is the summary from the CDC... https://www.cdc.gov/mmwr/volumes/69/wr/mm6923e4.htm?s_cid=mm6923e4_e&deliveryName=USCDC_921-DM30202 Summary What is already known about this topic? Information about COVID-19 among young adults is limited. What is added by this report? Among a convenience sample of 382 young adult U.S. service members aboard an aircraft carrier experiencing a COVID-19 outbreak, 60% had reactive antibodies, and 59% of those also had neutralizing antibodies at the time of specimen collection. One fifth of infected participants reported no symptoms. Preventive measures, such as using face coverings and observing social distancing, reduced risk for infection. What are the implications for public health practice? Young, healthy adults with COVID-19 might have mild or no symptoms; therefore, symptom-based surveillance might not detect all infections. Use of face coverings and other preventive measures could mitigate transmission. The presence of neutralizing antibodies among the majority is a promising indicator of at least short-term immunity.
What do the following have in common; Santa Claus, the Easter Bunny, the Tooth Fairy, and natural herd immunity for COVID-19. They are all myths. Obviously if antibodies for COVID-19 last only a few mere weeks after infection then "natural herd immunity" is a fantasy... and infected people will catch COVID-19 again after recovery. Just like the 15 sailors on the aircraft carrier. Coronavirus antibodies may last only two to three months after infection, study suggests https://www.cnbc.com/2020/06/18/cor...-3-months-after-infection-study-suggests.html Coronavirus antibodies may last only two to three months after a person becomes infected with Covid-19, according to a new study published Thursday in Nature Medicine. Researchers in the Wanzhou District of China compared the antibody response of 37 asymptomatic people with that of 37 symptomatic people. The researchers found people without symptoms had a weaker antibody response than those with symptoms. Additionally, within eight weeks, antibodies fell to undetectable levels in 40% of asymptomatic people, compared with 12.9% of symptomatic people, according to the study’s findings. (More at above url)
How long antibodies last has always been a question.... see... I asked that question on the first page of this thread...
I think this is what we were discussing last week. The second study seems consistent with other reports we saw weeks ago... Maybe it was the same population. If you are asymptomatic you many not develop long lasting or detectible antibodies. Which leaves us with many questions. I have quite a few about the accuracy of the antibody tests. Because frankly I think we would be hearing about many more people getting it twice by now. Especially nurses and doctors in hospitals. But.. we will see. https://www.the-scientist.com/news-opinion/studies-report-rapid-loss-of-covid-19-antibodies-67650 Studies Report Rapid Loss of COVID-19 Antibodies The results, while preliminary, suggest that survivors of SARS-CoV-2 infection may be susceptible to reinfection within weeks or months. Amanda Heidt Jun 19, 2020 CHRISTOPH BURGSTEDT Apair of studies published this week is shedding light on the duration of immunity following COVID-19, showing patients lose their IgG antibodies—the virus-specific, slower-forming antibodies associated with long-term immunity—within weeks or months after recovery. With COVID-19, most people who become infected do produce antibodies, and even small amounts can still neutralize the virus in vitro, according to earlier work. These latest studies could not determine if a lack of antibodies leaves people at risk of reinfection. One of the studies found that 10 percent of nearly 1,500 COVID-positive patients registered undetectable antibody levels within weeks of first showing symptoms, while the other of 74 patients found they typically lost their antibodies two to three months after recovering from the infection, especially among those who tested positive but were asymptomatic. In contrast, infections caused by coronavirus cousins such as SARS and MERS result in antibodies that remain in the body for nearly a year, according to The New York Times. The first study, published June 16 on the preprint server medRxiv, screened for antibodies in almost 1,500 coronavirus patients in Wuhan, China. The researchers compared their levels to three other groups: nearly 20,000 members of the general population; more than 1,600 patients hospitalized for reasons other than COVID-19; and more than 3,800 medical workers, whom the authors assumed had “inevitably” been exposed to the virus in its early days, meaning they should have developed antibodies. They found that while almost 90 percent of COVID-19 patients had antibodies, roughly 1 percent to 5 percent of individuals in the others groups had them as well. The authors conclude in their paper that the remaining 10 percent of infected patients with no detectable antibodies, combined with the lack of antibodies in healthcare workers, suggest that “after SARS-CoV-2 infection, people are unlikely to produce long-lasting protective antibodies against this virus.” See “What Do Antibody Tests For SARS-CoV-2 Tell Us About Immunity?” In the second study, published June 18 in Nature Medicine, researchers compared the immune responses of 37 asymptomatic but positive patients to an equal number with severe symptoms living in the Wanzhou District in China. They found that asymptomatic individuals reacted less strongly to infection, with 40 percent having undetectable levels of protective antibodies in the two to three months after the infection compared to 13 percent of the symptomatic patients. “Overall, these results are interesting and provocative but more research is needed, following large numbers of people over time,” Daniel Davis, an immunologist at the University of Manchester, tells Newsweek. “Only then will we clearly know how many people produce antibodies when infected with coronavirus, and for how long.” The discrepancies between people mirror what Anthony Fauci, the director of the National Institute of Allergy and Infectious Diseases, has himself observed. In a conversationwith Howard Bauchner, the editor in chief of the Journal of the American Medical Association earlier this month, he said that in addition to a lack of consistency among testing methods, individuals do not have “a uniformly robust antibody response.” This fact may make it difficult to develop a vaccine that works equally well for all people. See “Why the Accuracy of SARS-CoV-2 Antibody Tests Varies So Much” “These reports highlight the need to develop strong vaccines, because immunity that develops naturally during infection is suboptimal and short-lived in most people,” Akiko Iwasaki, a viral immunologist at Yale University who was not involved in either study, tells The New York Times. “We cannot rely on natural infection to achieve herd immunity.”
Numerous doctors who actually, practice medicine have noted that you develop immunity to any virus once, you get infected then, get cured of it. Had both measles and chicken pox when I was 6, now 62, have not had it again. I am more inclined to believe nothing has changed and you still get immunity from any virus after you overcome it and get better. You cannot get infected again nor infect others. Now, a lot of studies coming out of the woodwork and who is funding these studies? None of it is free. Someone pays for these studies and either it is a corporation or a political hack out to use it for political purposes. None of these studies have been vetted for accuracy in the first place, the methods they used, etc. Figures are meaningless without verification or audit if you prefer that word.
Are you claiming that EVERYONE gets immunity from measles once they have it? Even the vaccine is only 97% effective. As noted in the Baltimore studies of measles that led to the "herd immunity" vaccine theory - there was as least 6% of the population who had measles who caught it a second time. The first case being mild and the second case being much worse. The common code is a coronavirus. You can catch the same common cold over & over again..... there is little to no immunity for most variants of the common cold -- if there are then they last a few weeks at best.
Some generic factors (some are generically resistant to HIV) but mostly self-reporting error. My oldest brother never gets sick, his eyes are red, he has a temperature, his nose is running but no way he is ill. As the cold is made up of several types of virus, even still unknown types its beyond improbable some are generically resistant to all colds. They may more likely have been lucky not to encounter many they would get.
So, now you muddle the issues? What is a cold anyways? An allergy. Just boil some ginger, add honey and drink it. Your sniffles would be gone in a hurry. Apples to oranges comparison. By and large, you develop immunity to any virus. It is not me saying it but, actual doctors out there practicing medicine and not the hacks in their cushy offices with 6 figure salaries? These hacks have to remain relevant otherwise, their asses would be canned and those go those fat salaries of theirs. Dr. Fauci lied about the masks and saying they do nothing for you. Now, admits that is a lie. Predicted 2,000,000 deaths per his models then, revised it lower and lower. Say, we will be overwhelmed with a 2nd wave but, now says there will not be a 2nd wave? When does the lies end? And that is what we need to believe in? Studies without vetting or being audited are bogus. Just like financial statements of Wall Street companies that is unaudited. All smoke and mirrors.
FALSE https://www.health.com/condition/cold-flu-sinus/catch-cold-twice-video It’s actually highly unlikely to catch the same cold twice. Colds are caused by viruses, and when your immune system fights one off, it builds up antibodies to it. Even if you encounter lingering viral particles from the same cold strain you battled before—on your coffee mug, your toothbrush, or via a cough or a sneeze from someone nearby—you’re probably not going to be infected again. While you’re immune to that particular cold virus, you’re not protected from the more than 200 other viruses that can cause the sniffles.