Objectives: There are paucity of studies examining naturally acquired immunity against SARS-CoV-2 in children and adolescents, though they are generally the last group to be afforded the vaccine, and a significant portion of them are still unvaccinated. This study examined the duration of protection conferred by a previous SARS-CoV-2 infection amongst children and adolescents. Design: A retrospective study, applying two complementary approaches: a matched test-negative case control design and a retrospective cohort design. Setting: Nationally centralized database of Maccabi Healthcare Services, an Israeli national health fund that covers 2.5 million people. Participants: The study population included between 293,743 and 458,959 individuals (depending on the model), 5-18 years of age, who were unvaccinated SARS-CoV-2 naive persons or unvaccinated convalescent patients. Main outcomes and measures: Analyses focused on the period of July 1 to December 13, 2021, a Delta-dominant period in Israel. We evaluated three SARS-CoV-2-related outcomes: (1) documented PCR confirmed infection or reinfection, (2) COVID-19 and (3) severe COVID-19. Results: Overall, children and adolescents who were previously infected acquired durable protection against reinfection (symptomatic or not) with SARS-CoV-2 for at least 18 months. Importantly, no COVID-19 related deaths were recorded in either the SARS-CoV-2 naive group or the previously infected group. Effectiveness of naturally-acquired immunity against a recurrent infection reached 89.2% (95% CI: 84.7%-92.4%) three to six months after first infection, mildly declining to 82.5% (95% CI, 79.1%-85.3%) nine months to one year after infection, then remaining rather steady for children and adolescents for up to 18 months, with a slight non-significant waning trend. Additionally, we found that ages 5-11 exhibited no significant waning of naturally acquired protection throughout the outcome period, whereas waning protection in the 12-18 age group was more prominent, but still mild. Conclusions: Children and adolescents who were previously infected with SARS-CoV-2 remain protected against reinfection to a high degree for 18 months. Policy decision makers should consider when and if convalescent children and adolescents should be vaccinated. Nonetheless, further research is needed to examine naturally acquired immunity against emerging variants, including the Omicron.
Competing Interest Statement
The authors have declared no competing interest.
There was no external funding for the research.
I confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained.
The details of the IRB/oversight body that provided approval or exemption for the research described are given below:
This study was approved by the MHS (Maccabi Healthcare Services) Institutional Review Board (IRB). Due to the retrospective design of the study, informed consent was waived by the IRB, and all identifying details of the participants were removed before computational analysis.
I confirm that all necessary patient/participant consent has been obtained and the appropriate institutional forms have been archived, and that any patient/participant/sample identifiers included were not known to anyone (e.g., hospital staff, patients or participants themselves) outside the research group so cannot be used to identify individuals.
I understand that all clinical trials and any other prospective interventional studies must be registered with an ICMJE-approved registry, such as ClinicalTrials.gov. I confirm that any such study reported in the manuscript has been registered and the trial registration ID is provided (note: if posting a prospective study registered retrospectively, please provide a statement in the trial ID field explaining why the study was not registered in advance).
I have followed all appropriate research reporting guidelines and uploaded the relevant EQUATOR Network research reporting checklist(s) and other pertinent material as supplementary files, if applicable.
Paper in collection COVID-19 SARS-CoV-2 preprints from medRxiv and bioRxiv
New study from Italy details the lack of effectiveness of covid jabs in children aged 5-11.
A unified pushback against the globalist agenda
It’s finally here, the Global Walkout begins September 4th at 8pm London time and continue every weeks. Next step october 2nd.
One step at a time, hand in hand, we are walking out from the globalist society they are trying to enslave us into
ANYONE can participate
ANYWHERE in the world
JOIN or read about it here – https://globalwalkout.com
The third step is to unsubscribe from all mainstream media outlets. Delete the apps from your phone, laptop, and tablet and unfollow all of their social media and YouTube channels. Try to avoid mainstream media for at least one week, even if the headline is intriguing.
In the same time why not removing all the big tech tracking/spying/social credit system around you: (Youtube, Facebook, Instagram, Twitter, Tik Tok, Google, Apple, Microsoft, Whatsapp, Zoom, Linkedln, Snapchat, Tumblr, Pinterest, Reddit, Myspace, etc.)
The fourth step of the global walkout is to move as many accounts as you can to a union or local bank.
If you like our work please consider to donate :
If you are looking for solutions (lawyer, form, gathering, action, antidote, treatments, maybe this could help you:
If you want to fight back better:
Find the others: www.freedomcells.org
Spike Protein Protocol
Glutathione (most important for body detoxification) or better
NAC = N-Acetyl-Cysteine 600-750mg (causes the body to produce glutathione itself)
Astaxantin 5mg (also improves vision)
Milk thistle (also liver and stomach protection)
Melatonin 1mg to 10mg (against 5G)
Alternatively CDS/CDL and zeolite
Dr. Zelenko’s Protocol contains Ivermectin, Hydroxychloroquine (HCQ), Zinc, Vitamin D3, and Quercetin.