Also known as B.1.351, it . The Lambda variant (C.37 or B 1.1.1) was detected as early as December 2020 in Lima, Peru. Currently, more than 29 countries have detected this variant. Even if an infection caused by a particular variant is less likely to cause severe disease compared to other variants, an increase in the total number of cases could cause an increase in hospitalizations, put more strain on healthcare resources, and potentially lead to more deaths. A clade reaches >20% global frequency for 2 or more months, A clade reaches >30% regional frequency for 2 or more months, A VOC ('variant of concern') is recognized (applies currently [6 January 2021] to 501Y.V1 and 501Y.V2), This page was last edited on 27 February 2023, at 17:29. Lots of people have built up some immunity from past infections and vaccination, which is helping to make the . If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance. BA.4 and BA.5 Omicron are not thought to be any more lethal than other types of Covid. Complete the form below and we will email you a PDF version of
It soon surfaced around the world and became the dominant variant in the U.S., where the CDC classified it as a variant of concern. This variant was thought to be slightly more contagious than Delta itself, but while Great Britain was tracking a steady rise of AY4.2, it did not rise as quickly in the U.S. How contagious is it? A new COVID-19 variant is causing concern among healthcare professionals. "These findings suggest that nutritional strategies to increase the circulating n-3 . The institute's Dr Ewan Harrison thinks XBB.1.5 probably emerged when someone got infected with two different Omicron types: "A bit of the genome from one virus gets joined up with another bit from a second virus, and they merge, and that goes on to transmit.". Some cases have also been recorded in the UK, so what do you need to know about XBB.1.5? Nausea has always been a common Covid symptom, including with the Omicron variant, said Dr. No matter the variant, a surge in cases can impact healthcare resources. If they do, this will be reassuring. But others, such as the genetic changes in the delta variant, can make the coronavirus more transmissible contagious) than the original version of SARS-CoV-2 that was . COVID-19 vaccine: Should I reschedule my mammogram? KOCO 5 is keeping you updated on the COVID-19 pandemic in Oklahoma. It had previously estimated as many as 40% of cases were XBB.1.5. AY.4.2 had two mutations to its spike protein, AY145H and A222V, that were considered to be key, but they were not located in a place where they would inhibit vaccines or treatments. But she is worried about the potential effect on the vulnerable, including the immunocompromised, who get less benefit from Covid jabs. In the fall of 2021, there were surges even in the most vaccinated states, prompting experts to urge people to get their booster shots. We hear of viral variants such as delta and lambda, a nomenclature invoked as scientists realized the unintended bias (and sometimes persecution) associated with the geographic labeling of variants. You are now subscribed to our newsletters. the globally-dominant Omicron Covid variant, similar to those of previous Omicron strains, nearly 28% of Covid cases in the US in the first week of January were caused by XBB.1.5, with both viruses putting strain on an already stretched NHS, How to look after yourself if you get Covid, to share clinical information on people infected in order to see how the variant behaves. If you have a question,email heror message her onFacebookorTwitter. Knowing what variants are circulating in California informs public health and clinical action. Alpha (B.1.1.7) was the first of the highly publicized variants. As the virus spreads, it may change and become harder to stop. What's kraken? It usually occurs several days or more after a test is identified as positive for COVID-19. https://www.who.int/en/activities/tracking-SARS-CoV-2-variants/. Meaning 'little o' in Greek, Omicron has been given a big platform with its designation as the latest Covid-19 variant of concern; Unlike other Greek letters, its use in mathematics, science . She said these evolutionary changes were like "stepping stones", as the virus evolves to find new ways of bypassing the body's defence mechanisms. https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/variant-surveillance/variant-info.html#Concern. She is also a host and contributing editor for Harvard Health Publications (HHP), the publishing division of Harvard Medical School. BA.4 and BA.5 Omicron are not thought to be any more lethal than other types of Covid. Take steps to, For the most up to date information on current variants, visit CDCs. - Related Information. First published on March 2, 2023 / 5:56 PM. The great news is that these proven public health strategies continue to work against new variants as well. COVID is a dangerous . "China needs to share clinical information on people infected in order to see how the variant behaves in a non-immune population," Prof Heymann said. It is yet another offshoot of the globally-dominant Omicron Covid variant. There are many variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes coronavirus disease 2019 (COVID-19). The UK Health Security Agency is due to release a report on variants spreading in the UK next week. Dr. Anthony Fauci warned Tuesday that there could be a future COVID-19 variant that would be highly transmissible something he called a "monster variant.". Scientists keep underestimating the coronavirus. I am also confident that if we find that the current vaccines are not providing optimal protection against severe disease or death due to this variant, we will be able to quickly modify the current vaccines to address omicron.. As of February 18, 2023, XBB.1.5, also called kraken, is the dominant variant in Nebraska, making up 44% of cases. Debbie writes, "Will any COVID variant give you long-term COVID symptoms?". On the contrary, we are continuing to hold drills and to challenge ourselves, he added. Get the latest COVID-19 news from infectious diseases expert Mark Rupp, MD, including COVID-19 case rates, types of variants circulating and vaccine updates. March 2, 2023 / 5:56 PM How contagious is it? While the data is limited, it was thought to be 10 to 20% more transmissible than Delta. CDC twenty four seven. With the situation in much of the rest of the world worsening with respect to the pandemic, said Bennett, Israel is safe and protected. But, he added, to maintain this and safeguard the continuity of normal life, we must continue to closely monitor the situation and prepare for any scenario.. Severity: There was evidence to suggest that Beta may have been more likely than other variants to lead to hospitalization and death. Keep checking this story for updates on vaccination rates, latest data updates of new cases and the omicron variant, along with local and national headlines.Confirmed COVID-19 Cases in OklahomaThe Oklahoma State Department of Health announced it will no longer release daily COVID-19 situation updates as it moves toward the . Sequencing results are used by public health experts to understand variant trends in the community. Currently, the European Region is the epicentre of the pandemic. There are currently more than 34,679 cases reported in the United States per day, with test positivity of 10%. How do COVID-19 antibody tests differ from diagnostic tests? CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website. If you can't, then I think you should wear a mask.". For other variants, providing high-risk infected and exposed patients with early access to MAbs reduces their risk of hospitalization and death by up to 70%. However, after 10 days of cohousing, the lung tissue of the dogs was collected for histopathologic examination and viral load measurement. They help us to know which pages are the most and least popular and see how visitors move around the site. Update on omicron. World Health Organization. Then, Alpha faded away with the rise of the more aggressive Delta variant. As genetic changes happen over time, the virus that causes COVID-19 begins to form genetic lineages. CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Lots of people have built up some immunity from past infections and vaccination, which is helping to make the . Photo by Yossi Aloni/Flash90. WHO currently lists the omicron as a variant of concern. CDC coordinates collaborative partnerships which continue to fuel the largest viral genomic sequencing effort to date. Complete the form below to unlock access to ALL audio articles. (November 11, 2021 / JNS) Israel began a national drill on Thursday to test the countrys preparedness for the outbreak of a new, more lethal variant of the COVID-19 virus. Statement on Omicron sublineage BA.2. The available commercial diagnostic PCR (polymerase chain reaction) and antigen COVID tests still appear to work to identify the omicron variant. Centers for Disease Control and Prevention. Our pharmacies offer COVID-19 bivalent booster vaccines on a walk-in basis. But it could have been a lot worse. The prevalence of XBB.1.5 has kept increasing since late last year, and it is estimated to account for 89.2 per cent of new Covid-19 cases in the country this week, up from 85.4 per cent last week . This content does not have an English version. Stuart Ray, M.D., vice chair of medicine for data integrity and analytics, and Robert Bollinger, M.D., M.P.H., Raj and Kamla Gupta Professor of Infectious Diseases, are experts in SARS-CoV-2, and they address your questions about the omicron coronavirus variant. A recent study conducted by South Korean researchers has found that certain variants of Covid-19, including the severe Delta variant, can be transmitted between dogs. Can vaccination prevent it? Many of these variants' mutations have little or no impact on how the virus affects humans. (November 11, 2021 / JNS) Israel began a national drill on Thursday to test the country's preparedness for the outbreak of a new, more lethal variant of the COVID-19 virus.. When test positivity is above 5%, transmission . Some variants spread more easily and quickly than others, which may lead to more cases of COVID-19. Efficacy reduction against symptomatic disease, Lineage B.1 in the PANGO Lineages nomenclature system; includes, BQ.1 and BQ.1.1: BA.5 + S:R346T, S:K444T, S:N460K, BA.2.75: BA.2 + S:K147E, S:W152R, S:F157L, S:I210V, S:G257S, S:D339H, S:G446S, S:N460K, S:Q493R reversion, Recombinant of BA.2.10.1 and BA.2.75 sublineages, i.e. Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website. Note: Information in this article was accurate at the time of original publication. Log in to our website to save your bookmarks. More specifically, the manufacturing of new viruses by . But the WHO said there was no indication so far that it was more serious or harmful than previous Omicron variants. Those variants must be monitored more carefully. The exercise, which is being conducted from a situation room in Jerusalem in the format of a war game, is designed to test national management of a new "Omega" strain, according to an official statement. A new Covid sub-variant is causing some concern in the US, where it is spreading rapidly. Could the XBB.1.5 variant take off in the UK? At the same time, however, we are always looking ahead and preparing for the continuation of the campaign. The UK had five Omicron waves in 2022, and further spikes in cases seem inevitable. The omicron subvariant of COVID-19, BA.5, became one of the dominant strains of the virus in the fall of 2022 in the U.S. At that time, it was the most easily spread strain to date and is able to evade immunity from COVID infection and vaccination. Neutralization of the SARS-CoV-2 omicron BA.1 and BA.2 variants. The vaccines have always had to contend with variants: The Alpha variant (also known as B.1.1.7) was already spreading around the world when the first COVID-19 vaccination campaigns began. A chart that surfaced online in summer 2021 accurately displayed COVID-19 variants and when they would first be detected and covered in news reports. A single copy of these materials may be reprinted for noncommercial personal use only. No vaccine is 100% effective, and Delta caused breakthrough infections in some fully vaccinated people. World Health Organization. Currently, the Centers for Disease Control and Prevention (CDC) has identified one variant of the virus (SARS-CoV-2) that causes coronavirus disease 2019 (COVID-19) as a variant of concern: Omicron. The Spanish press reported infections of their royal family (even though British royals were suffering at the same time), thereby creating a label that persists to this day. Cookies used to enable you to share pages and content that you find interesting on CDC.gov through third party social networking and other websites. This variant, or B.1.351, was identified in South Africa at the end of 2020 and spread to other countries. Some variants of the coronavirus, such as Delta and Omicron, are spreading more easily between people. New Drug's Long Odds: A promising new treatment quashes all Covid variants, but regulatory hurdles and a lack of funding make it unlikely to reach the United States market anytime soon. CDC uses viral genomic surveillance to quickly identify and track COVID-19 variants, and acts upon these findings to protect the publics health. A virologist explains", COG-UK update on SARS-CoV-2 Spike mutations of special interest: Report 1, "Researchers Discover New Variant of COVID-19 Virus in Columbus, Ohio", "N501S B.1.617.2 () ", "Coronavirus: Are mutations making it more infectious? Some are believed, or have been stated, to be of particular importance due to their potential for increased transmissibility, [1] increased virulence, or reduced effectiveness of vaccines against them. Figures for the week to Saturday 17 December from Wellcome Sanger suggested that one in 25 Covid cases in the UK were XBB.1.5. In the study, Beagle dogs were infected with the Delta and Omicron variants of the virus through their noses. The XBB variant of COVID-19, which comes from the BA.2 sublineage of the SARS-CoV-2 virus, is slowly gaining traction worldwide and increasing COVID-19 cases in some countries. A Doomsday COVID Variant Worse Than Delta and Lambda May Be Coming, Scientists Say. Nevertheless, some politicians, including former U.S. president Donald Trump, have used terms such as "the China virus" in order to smear rival nations.Certain countries have also been used as . Delta AY.4.2, sometimes referred toincorrectlyas Delta Plus, was actually the most prominent of a number of Delta offshoots, some of which had mutations new to Delta but that were found in other variants. Severity:It did not appear to pose a greater chance of hospitalization or death. The Omicron variant (B.1.1.529) was first detected in specimens collected on Nov. 11, 2021, in Botswana. Snopes is still fighting an "infodemic" of . It's not clear why, but may be due to the effectiveness of the vaccines and boosters, previous infections, or mutations making these newer variants less virulent. https://www.cdc.gov/coronavirus/2019-ncov/variants/variant.html. Prof Barclay said she was not especially concerned about the general UK population because there was "no indication" that XBB.1.5 would "break through" the protection against severe illness provided by vaccines. The researchers suggest that pet vaccinations should be actively considered to prevent animal-to-human infection. Numerous variants of the virus that causes COVID-19 are being tracked in the United States and globally during this pandemic. Any COVID variant can cause long COVID symptoms but so far, we're seeing less long COVID with the Omicron variant and subvariants than with previous variants, like Delta. Prof Barclay said she expected more hospitalisations in the UK if the variant takes off here, "as we expect it to do". In the weeks ahead, we will learn more about how well the antibodies induced by the current vaccinations can neutralize the omicron variant in the laboratory. To avoid a repeat of this mistake, the classification of new variants is akin to hurricane nomenclature, with alphabetic naming of significant new variants. Getting vaccinated and getting a COVID-19 booster, hand-washing and avoiding large indoor gatherings, especially with unmasked people, are other ways to mitigate the risk of infection. Omicron has outperformed the earlier Alpha, Beta, Gamma and Delta coronavirus variants since emerging in late 2021. Get browser notifications for breaking news, live events, and exclusive reporting. COVID-19 vaccines for kids: What you need to know, COVID-19 vs. flu: Similarities and differences. How Variants Work. According to Centers for Disease Control (CDC) estimates, nearly 28% of Covid cases in the US in the first week of January were caused by XBB.1.5. Increased affinity for particular demographic or clinical groups, such as children or immunocompromised individuals. Most people experience cold-like symptoms. Omicron has also given rise to many more contagious sub-variants. How well do face masks protect against COVID-19? Predict the closing value of sensex and win free subscription. We've updated our Privacy Policy to make it clearer how we use your personal data. In the beginning of the pandemic, they said mutated versions of . Can Nigeria's election result be overturned? The . A quick guide to the coronavirus variants that have been top-of-mind. However, some changes may affect the virus's properties, such as how easily it spreads, the associated disease severity, or the performance of vaccines . If you think about a virus like a tree growing and branching out; each branch on the tree is slightly different than the others. Ease your uncertainty with fact-checked information by our experts. Do COVID-19 vaccines protect against the variants? In the U.S., inmid-April 2021before Delta became predominantAlpha comprised 66% of cases, according to a study released in June by the CDC. Centers for Disease Control and Prevention. Because information about COVID-19 changes rapidly, we encourage you to visit the websites of the Centers for Disease Control & Prevention (CDC), World Health Organization (WHO), and your state and local government for the latest information. SARS-CoV-2 lineages with similar characteristics may affect how fast the virus spreads, the severity of illness it causes, or the effectiveness of treatments against it; some of these may be classified by the World Health Organization (WHO) or the U.S. SARS-CoV-2 Interagency Group (SIG). Saving Lives, Protecting People, Given new evidence on the B.1.617.2 (Delta) variant, CDC has updated the, The White House announced that vaccines will be required for international travelers coming into the United States, with an effective date of November 8, 2021. President Kevin Sowers and Dr. Lisa Maragakis discuss the omicron variant, COVID-19 boosters and staying safe through the holidays. Accessed Aug. 23, 2022. If you think about a virus like a tree growing and branching out, each branch on the tree is slightly different than the others. The BBC is not responsible for the content of external sites. Remdesivir is the only such antiviral drug currently authorized for emergency use by the Food and Drug Administration (FDA) to treat COVID-19. Experts had been concerned about its several mutations and its potential to evade antibodies. For the delta variant, the part of the spike protein that attaches to our cells is very similar to what existing coronavirus vaccines are designed to go after. We will know more about this in the coming weeks.. As a virus spreads, it has a chance to change. Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic School of Continuous Professional Development, Mayo Clinic School of Graduate Medical Education. Here's what Covid-19 experts know about virulence, transmissibility, and immune escape. But in the case of the omicron variant, the spike picked up 32 mutations that make it more difficult (though not impossible) for our immune system . XBB.1.5 evolved from XBB, which began circulating in the UK in September 2022. This is especially true if a new variant is more aggressive, highly transmissible, vaccine-resistant, able to cause more severe diseaseor all of the above, compared with the original strain of the virus. "Our results demonstrate that the dogs were susceptible to infection with and could transmit both strains to other dogs through direct contact," the study found. https://www.who.int/news/item/28-11-2021-update-on-omicron. Evidence shows those vaccinated and boosted continue to be protected against severe disease, hospitalization, and death even with the latest variants. One thing we know for sure about SARS-CoV-2, the virus that causes COVID-19, is that it is changing constantly. strain at least 15 times more virulent", "N440k Covid Variant: Mutant N440K 10 times more infectious than parent strain | Hyderabad News", " SARS-CoV-2 13", "Mutations in spike putatively linked to outbreak at Danish mink farms", "Coronavirus SARS-CoV-2 (formerly known as Wuhan coronavirus and 2019-nCoV) what we can find out on a structural bioinformatics level", "Serine 477 plays a crucial role in the interaction of the SARS-CoV-2 spike protein with the human receptor ACE2", "BioNTech: We aspire to individualize cancer medicine", "People Are Talking About A 'Double Mutant' Variant In India. If youre considering vaccination, you may be concerned about the long-term risks. But others, such as the genetic changes in the delta variant, can make the coronavirus more transmissible contagious) than the original version of SARS-CoV-2 that was discovered in late 2019. Experts in South Africa first reported the Omicron variant to the World Health Organization . Do COVID-19 vaccines protect against the variants? Can vaccination prevent it? . SARS-CoV-2, like all viruses, seeks out hosts, whom it can subdue and manipulate to promote its propagation and thereby ensure its survival. You can read our Cookie Policy here. Accessed July 7, 2022. The Omicron variant, which emerged in November 2021, has many lineages. XBB had a mutation that helped it beat the body's immune defences, but this same quality also reduced its ability to infect human cells. "The Alpha and Omega of COVID-19: Yes, the Pandemic Will End (but Not Soon)". Covid hospital admissions have been rising in recent weeks across the US, and the government has restarted its free testing programme. It is time to consider the use of animal vaccines to prevent the reverse zoonosis of pets.". Thank you for taking the time to confirm your preferences. There are currently more than 34,679 cases reported in the United States per day, with test positivity of 10%. Omicron is . This "patient zero" is the first victim of an elaborate series of microscopic hijacking events. ", "New, more infectious strain of COVID-19 now dominates global cases of virus: study", "Tracking Changes in SARS-CoV-2 Spike: Evidence that D614G Increases Infectivity of the COVID-19 Virus", "SARS-CoV-2 D614G variant exhibits efficient replication ex vivo and transmission in vivo", "Evaluating the effects of SARS-CoV-2 Spike mutation D614G on transmissibility and pathogenicity", "Chemosensory Dysfunction in COVID-19: Integration of Genetic and Epidemiological Data Points to D614G Spike Protein Variant as a Contributing Factor", "Emergence in late 2020 of multiple lineages of SARS-CoV-2 Spike protein variants affecting amino acid position 677", "Study finds 7 newly-identified COVID-19 variants circulating in the United States", "Study shows P681H mutation is becoming globally prevalent among SARS-CoV-2 sequences", "Malaysia identifies new Covid-19 strain, similar to one found in 3 other countries", "Duterte says Sulu seeking help after new COVID-19 variant detected in nearby Sabah, Malaysia", "The current situation and Information on the Spike protein mutation of Covid-19 in Malaysia", "COVID-19 A701V mutation spreads to third wave clusters", "Variants of Concerns (VOC), B.1.524, B.1.525, South African B.1.351, STRAIN D614G, A701V, B1.1.7", "SARS-CoV-2 variants of concern and variants under investigation in England: Technical briefing 39", "COVID-19 Weekly Epidemiological Update: Edition 84, published 22 March 2022", "Coronavirus (COVID-19) Update: FDA Issues Policies to Guide Medical Product Developers Addressing Virus Variants", "Rates of SARS-CoV-2 transmission and vaccination impact the fate of vaccine-resistant strains", "Mechanisms of SARS-CoV-2 Evolution Revealing Vaccine-Resistant Mutations in Europe and America", "Study findings suggest spread of Omicron can be ascribed to immune evasiveness rather than an increase in transmissibility", "Omicron escapes the majority of existing SARS-CoV-2 neutralizing antibodies", "Striking antibody evasion manifested by the Omicron variant of SARS-CoV-2", "Omicron SARS-CoV-2 variant of concern: A review on its transmissibility, immune evasion, reinfection, and severity", "How soon after catching COVID-19 can you get it again? What Does That Mean? What COVID-19 variants are going around in February 2023? BJ1 and BM.1.1.1, with a breakpoint in S1, BA.2+ S:V83A, S:Y144-, S:H146Q, S:Q183E, S:V213E, S:G252V, S:G339H, S:R346T, S:L368I, S:V445P, S:G446S, S:N460K, S:F486S, S:F490S, Recombinant of BA.5.2.3 and CJ.1 (BA.2.75.3 sublineage), BA.5 + S:K147E, S:W152R, S:F157L, S:I210V, S:G257S, S:G339H, S:R346T, S:G446S, S:N460K, S:F486P, S:F490S, According to another source (Zhukova et al. Alpha, beta, gamma, delta there have been four COVID-19 variants of concern that have altered the course of the pandemic at different points in the past year and a half. Centers for Disease Control and Prevention. Severity: Studies have suggested the B.1.1.7 lineage was more likely to land infected people in the hospital and was deadlier than the original virus. The World . That means that, in addition to staying up-to-date with their vaccines, people were advised to practice such strategies as washing hands, wearing masks, and maintaining a physical distance from one another, especially when indoors in places where there was substantial or high transmission. Viruses constantly change through mutation. COVID vaccine makers brace for a variant worse than Delta. 4 things to know about the new XBB.1.5 COVID variant, COVID booster update: People 6 months and older encouraged to get the bivalent vaccine, COVID-19 vaccine statistics: Rare side effects. In 2022, the FDA authorized Pfizer-BioNTech and Moderna bivalent booster shots for everyone 6 months of age and older. For the most up to date information about current variants, visit CDC's COVID Data Tracker . BA.5 represents 13% of Nebraska cases. Here in Maine, about 65% of those currently hospitalized with COVID and, in some Maine hospitals, more than 90% of those with COVID who are . As the portmanteau suggests, Deltacron is a Covid variant that contains elements of Delta and Omicron - in other words, it contains genes from both variants, making it what is known as a . The following article is an opinion piece written by Michael S Kinch. View which vaccines are available at each location. Available preventive measures, including vaccination, are proven to be effective against all current COVID-19 variants. All viruses, including SARS-CoV-2, the virus that causes COVID-19, change over time. Susceptible individuals: S(t) In our model, the susceptible individuals gets exposed to infection, and move to exposed group E(t), from coming in contact with an infected . Why Alex Murdaugh was spared the death penalty, Why Trudeau is facing calls for a public inquiry, The shocking legacy of the Dutch 'Hunger Winter', Why half of India's urban women stay at home. In 2022, it spawned a number of subvariants, including BA.5, BQ.1, and BQ.1.1. Register for FREE to listen to this article. Many of these variants mutations have little or no impact on how the virus affects humans. The State of Israel is in an excellent situation. Its estimated that Delta caused more than twice as many infections as previous variantsin Connecticut, it was estimated to have been 80 to 90% more transmissible than the Alpha variant. The B.1.1.7 lineage was believed to be 30 to 50% more contagious than the original SARS-CoV-2 strain. The views and opinions expressed in this article are those of the author and do not necessarily reflect the official position of Technology Networks.News of COVID-19 seems awash in Greek letters. What you need to know about variants. Any COVID variant can cause long COVID symptoms but so far, we're seeing less long COVID with the Omicron variant and subvariants than with previous variants, like Delta. The SARS-CoV-2 virus can be mapped out similar to a family tree. Copyright HT Digital Streams Limited All rights reserved. Omicron is more likely than Delta to reinfect individuals who previously had COVID-19 and to cause "breakthrough infections" in vaccinated people while also attacking the unvaccinated. COVID-19 testing in California is free to anyone who needs it. Note: Information provided in Yale Medicine articles is for general informational purposes only. These boosters are designed to protect against disease caused by the original strain of the SARS-CoV-2 virus, as well as the Omicron subvariants BA.4 and BA.5 (although experts are still learning about their effectiveness against the latest Omicron subvariants). New lineages continue to emerge and spread in the United States and globally. Getty; The Atlantic. Covid vaccines provide most people with good protection against serious illness.
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