Why this subvariant might invoke an inflammatory response in the eyes is not known, says Schaffner. UC Davis Health patients can use the MyUCDavisHealth symptom tracker to evaluate whether to seek help. As it has been since the arrival of the COVID-19 vaccines, the virus is affecting the unvaccinated more than the vaccinated. Theres nothing particularly worrisome about this variant outside of a few mutations that may make it a little bit more resistant to immunity, says Pekosz. Omicron seems to have a shorter incubation time than other variants after a person is exposed, it takes as few as three days for them to develop symptoms, become contagious and test positive. Whats the Difference Between a Strain and a Variant? "There is no indication at the moment that its causing more severe disease and its not driving more people into the hospitals," says Schaffner. According to Schaffner, there have been a slew of anecdotal reports" from doctors that the XBB.1.16 variant may be causing a few distinct and unusual symptoms, especially among children. Centers for Disease Control and Prevention. It's highly contagious," says Schaffner. This is the same timeframe observed during the Delta wave, but slightly shorter than the two week endurance of the initial COVID-19 strain. It is more easily spread than other strains because it evades immunity from past COVID-19 infection and vaccination. If you developed symptoms, you may also end your isolation after five days (and continue to mask for another five days), as long as your symptoms are improving, and you've been fever-free for 24 hours. "I hope this motivates us to keep up our guard," he adds. If you have a medical emergency, call 911 and notify them of your COVID-19 symptoms. All of the variants, including omicron BA.5, cause similar COVID-19 symptoms: Even people who have partial immunity from a previous infection or vaccination can still have a breakthrough infection. Zee Krstic is a health editor for Good Housekeeping, where he covers health and nutrition news, decodes diet and fitness trends and reviews the best products in the wellness aisle. Are they different in any way from previous strains? Research published in the journal Nature in May 2022 showed that an Omicron breakthrough infectionwhich happens when a previously vaccinated and/or boosted individual gets Omicronenhances immunity. COVID-19 testing: What you need to know. That said, the length of symptoms varies greatly depending on the person, their vaccination status, the severity the disease, and any risk factors. The Omicron variant is more capable of evading natural immunity, and the interval between infection and reinfection with COVID-19 may be shorter. "We have to remember that 200 to 250 die every day of COVID in the United States," says Schaffner. The shortened incubation period also means that people may test positive sooner, due to emerging symptoms. Consider upgrading your face masks to N95s or KN95s if you want more protection. Pink eye is most often caused by a viral infection, such as adenovirus, but it can also be caused by bacterial infections, allergies or injuries, per the Mayo Clinic. If you have serious symptoms of illness, contact your primary care provider. ZOE Health Study. (In MyUCDavisHealth, click on Visits > Schedule Appointment > COVID Vaccination. National Institute of Infectious Diseases, Japan. "Were at a very different stage of the pandemic, and many labs are no longer routinely sequencing large numbers of COVID-19 cases," says Pekosz, adding that this makes it harder to accurately track new variants. COVID-19 spreads through respiratory droplets from an infected person, which can be breathed in or enter through the mouth, nose or eyes, per the CDC. It's more stealthy than previous variants and flies under the radar, so the immune system is unable to remember it.". doi:10.1001/jamanetworkopen.2022.27241. BMJ. Carla M. Delgado is a health and culture writer based in the Philippines. Data Suggests Omicron Infections Last 10 Days After Symptom Onset, Vaccination Status Might Not Impact Recovery Time, What You Need to Know About the XBB.1.16 'Arcturus' Variant, Antibodies From Vaccines vs. Antibodies From Natural Infection. The CDC's Variant Proportions page reflects which COVID-19 strains are currently circulating in the U.S. and in specific regions of the country, along with their prevalence. Reynolds CJ, Pade C, Gibbons JM, et al. Most healthy adults still have to wait. Health.com uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. XBB.1.5: What to Know About the 'Most Transmissible' COVID Subvariant Yet, Symptoms of the COVID-19 Omicron Variant: Here's What We Know, New COVID Variants May Fuel a Winter SurgeWhat to Know About BQ.1, XBB, and Others, Omicron BA.4 and BA.5 Symptoms: What To Know, How Effective Are the Bivalent Boosters? That means you could be protected for four to six months. Many individuals experiencing a breakthrough COVID-19 illness that doesn't result in any symptoms (referred to as asymptomatic), as some level of earned immunity is often at play here, Boden-Albala explains. Last week, XBB.1.16 accounted for an estimated 10% of cases in the U.S. compared to about 6% the previous week, according to the latest data from the U.S. Centers for Disease Control and Prevention. For more details, see our Privacy Policy. Is my upset stomach a symptom of Omicron? However, as the situation surrounding COVID-19 continues to evolve, it's possible that some data have changed since publication. And while Omicron may be somewhat milder, it spreads more easily than earlier variants, including the Delta variant. Unvaccinated bearing the brunt of the surge. Getting a third booster shot (or in other cases, fourth shot) when it's available to you enables your immune system to better respond to a breakthrough infection in the long run. "The vaccines are safe, they're effective, and theyre underutilized," Schaffner adds. Stay vigilant and get vaccinated if you havent already. See the latest CDC guidance on exposure and testing here . And that means you're probably incredibly unlikely to transmit the virus to anyone else, Pekosz said. CDC COVID-19 Response Team. Influenza (flu) and COVID-19 are both contagious respiratory illnesses, and they have similar symptoms. It may be hard to tell the illnesses apart based on symptoms alone, but there are three key differences, according to the CDC: You can get your flu shot and COVID-19 bivalent booster from UC Davis Health. At-home COVID tests, also known as rapid antigen tests, are useful because they provide quick results. Moderna and Pfizer both have a single-dose bivalent vaccine. How long before I had symptoms was I possibly contagious with omicron? That's because infectiousness declines much more quickly in immunocompetent people, according to MacDonald. Read our, What to Know About the Omicron XE Variant. Overall, its crucial to stay up to date with your COVID-19 vaccinations and continue practicing safety precautions. Taking a COVID-19 rapid test after symptoms go away, or after 10 days of symptom onset, can help you determine if you are infectious with COVID-19. doi:10.1177/01945998221097656. All those things are making things very, very sort of muddled in terms of trying to make simple statements about what's happening.. If you have access to antigen tests, you can test yourself. According to the ZOE COVID Symptom Study, 70 per cent of patients recover from Omicron symptoms in seven days. These tests are pretty reliable, but they're not perfect. Omicron vs. Delta: How the 2 COVID-19 Variants Compare, Omicron Variant's Incubation Period Is About 3 DaysWhat That Means. . A CDC study in January assessed the bivalent vaccine introduced last fall for its effectiveness against Omicron subvariants XBB and XBB.1.5 in people who had previously received two to four monovalent vaccine doses. Heres what you should know if you were previously infected with the Omicron variant. While some people have reported 'Paxlovid rebound'or a recurrence of COVID-19 symptoms after they've finished their course of treatmentthose rebound symptoms tend to be mild and only last a few days. Whether changes in duration of infection are a result of variant characteristics or the public's vaccination status is unclear. Claire Wolters is a staff reporter covering health news for Verywell. How Long Does COVID-19 Stay In Your Body? Like Arcturus, XBB.1.5 is also considered a variant of interest, per the WHO, and has been circulating widely since last fall. Those infected with COVID-19 sometimes experience change in or loss of taste and smell, which is less common with the flu. Learn more about the latest treatment recommendations. For people who developed severe illness from COVID-19 or have a weakened immune system, the CDC recommends consulting your healthcare provider before ending isolation. If you're currently in recovery from a breakthrough COVID-19 case, you may be wondering if it's too late to get a third or fourth vaccine dose. The research team analyzed blood samples from 731 U.K. healthcare workers who received three doses of mRNA vaccine and had different SARS-CoV-2 infection histories, to investigate immunity against Omicron. Centers for Disease Control and Prevention. We may earn commission from links on this page, but we only recommend products we back. The message from health experts remains that everyone should be vaccinated against COVID-19. This compares to only 44 per cent of those who had Delta. Omicron and its subvariants have shorter incubation periods, which means it takes less time for symptoms to appear after exposure to the virus. Delaying the shot allows eligible individuals to get the second booster when the antibody levels are likely waning. Symptom prevalence, duration, and risk of hospital admission in individuals infected with SARS-COV-2 during periods of Omicron and Delta variant dominance: A prospective observational study from the ZOE COVID Study. Id recommend getting the second booster at about five months after the first booster.. What can I do to protect myself and my family from omicron BA.5? Some of the earliest information on the duration of the virus comes from a study that looked at one of the. What We Know So Far About the New COVID-19 Booster Side Effects, Science brief: SARS-CoV-2 infection-induced and vaccine-induced immunity, Assessment of SARS-CoV-2 reinfection 1 year after primary infection in a population in Lombardy, Italy, Notes from the field: SARS-CoV-2 Omicron variant infection in 10 persons within 90 days of previous SARS-CoV-2 Delta variant infection four states, October 2021January 2022, Increased risk of SARS-CoV-2 reinfection associated with emergence of Omicron in South Africa. What Happens If I Skip My Second COVID-19 Vaccine? This way, they can potentially get a prescription for Paxlovid, an antiviral medication used to help prevent severe illness from the disease. Breakthrough infections are in people who have been vaccinated or previously had COVID. It has been detected in 33 countries so far, including the United States, but right now it is most prevalent in India. This content is imported from twitter. But its never 100%, and it wanes over time. Despite these often less severe symptoms and the potentially reduced symptom duration, it's still essential for those who are at high risk of severe illness from COVID-19 to check in with a healthcare provider if they contract the virus. The average patient will experience symptoms for about five days, Morris said. Most of the time, particularly because Omicron tends to be less severe, a case may look a lot like the common cold, or even allergies. The bivalent vaccines also broaden the immune response, which is expected to improve protection against future variants and extend the strength of protection. The WHO considers something a "variant of interest" if it meets two criteria: It's circulating widely, and it has suspected or known mutations that cause significant changes. Omicron infection enhances Delta antibody immunity in vaccinated persons. Studies suggest that Omicron infections can last in the body for up to 10 days. How COVID-19 spreads. These include the risk of exposure to the virus based on the level of transmission in the community, the nature of the variant being transmitted, and how well it can escape prior immunity.. Estimates for this exposure-to-symptom gap, called the incubation period, clocked in at about five days for Alpha and four days for Delta. Nature. Learn how to schedule your COVID-19 vaccine, boosters and additional doses, and the available treatments if you get COVID-19. A new omicron subvariant, XBB.1.16, is spreading in the United States, and some doctors are reporting that it may be causing unusual symptoms. "Immunity wanes over time, making herd immunity a moving target," Boden-Albala says. You can schedule your bivalent vaccine throughMyUCDavisHealth(non-patients without a login will have to create an account) or by calling916-703-5555. Will You Need Another COVID Booster This Spring? While BA.5, like previous Omicron subvariants, seems to spread more easily than other COVID-19 variants, the symptoms have generally been milder and have a shorter duration of six to seven days. XBB.1.16 is already taking off in the the U.S. and will likely climb, says Ko, and whenever cases go up, there is a potential for COVID-19 hospitalizations and deaths to go up, as well. The researchers found that people with no prior COVID-19 infection who then had Omicron showed enhanced immunity to previous variants but a reduced boosting against the Omicron spike protein itself. You can also sign up to get four free COVID test kits that are mailed to you from the federal government. 2023UC Regents. Variants of the virus. Should You Test for COVID Before Your Omicron Booster? The Lancet. "I would suggest that an infection that occurs after vaccination would last, on average, about four to five days, and would be accompanied by a runny nose, sore throat and cough," he adds. "The most distinct aspect of (Arcturus) is that it has a tendency to produce inflammation of the external part of the eye and eyelids, says Schaffner, adding that this can cause itching, redness, swelling and tearing or discharge that lasts for about a week. doi:10.1001/jamainternmed.2021.2959, Roskosky M, Borah BF, DeJonge PM, et al. Omicron Variants BQ.1 and BQ.1.1 Are Now Dominant in U.S. What You Need to Know About the XBB.1.5 'Kraken' Variant. There are few people who were infected with Omicron and had neither been vaccinated nor infected with an earlier variant. You can also reach out to our experts using UC Davis Healths convenient Telehealth Express Carefor urgent needs or extended-hours video visits. The Best Masks to Protect Against Omicron Spread, noted that breakthrough infection symptoms, experiencing a second or third reinfection, any combination of known COVID-19 symptoms, Your Privacy Choices: Opt Out of Sale/Targeted Ads, Shortness of breath, difficulty breathing. People who havelong COVID-19 symptomscan experience health problems for four or more weeks after first being infected,according to the CDC. Its an mRNA vaccine that targets the original SARS-CoV-2 virus and another component found in both the omicron BA.4 and BA.5 strains. Recently updated guidelines set forth by CDC officials indicate that those who test positive for COVID-19 must be isolated at home for at least five days. How Long Does Immunity From Omicron Last? In addition, Omicron can cause reinfection, even in people who have recovered from COVID-19. You can schedule your bivalent vaccine through, (non-patients without a login will have to create an account) or by calling, . Whole-genome sequencing confirmed that the cases did not represent prolonged viral shedding and the patients had two separate infections. She is most passionate about stories that cover real issues and spark change. Learn more about the COVID-19 bivalent booster and how you can schedule your bivalent booster at UC Davis Health. But despite being more than two years into the COVID-19 pandemic, there's still some confusion as to what having COVID-19 looks like from start to finish, especially as new variants and subvariants continue to pop up. The second booster shot is available for immunocompromised individuals and people ages 50 and above who got their first booster dose at least four months ago. MMWR Morb Mortal Wkly Rep. 2021;70:17821784. This is why current CDC quarantine rules have been adapted in recent months, Dr. Wright explains. Instead of testing right away, you could monitor for COVID-19 symptoms and get tested if any develop. "As your body starts recognizing the fact that it's been infected, your immune system will start taking actions, and those actions are those symptoms that you feel: fatigue, headache, malaise," Dr. Adalja said. If you're unvaccinated or not yet fully vaccinated, the CDC advises that you get tested on days 4, 5, or 6 following exposure if you have no symptoms. That incubation period is just about three days, compared to the Delta variant's five-day incubation period, and the original SARS-CoV-2 virus' incubation period of more than 5 days, according to a December 2021 report published in the CDC's Morbidity and Mortality Weekly Report (MMWR). So far, this is something distinctive that's an annoyance.". What exactly is the XBB.1.16 Arcturus subvariant, how transmissible is it compared to other omicron subvariants, and which symptoms should people be looking out for? Unfortunately, it's impossible to know how long a breakthrough case will present symptoms, as each case is unique and your personal health history may influence the length (and severity) of your recovery. How Many Times Can You Get Reinfected With the Same COVID Variant? So, a short wait is prudent. Nature. In a Nov. 22 White House . Awareness of SARS-CoV-2 Omicron variant infection among adults with recent COVID-19 seropositivity. How can at-home tests help during a COVID-19 surge? While a slight majority of Americans have received a full vaccination against COVID-19 sometime over the past few years the figure stands at around 60%, according to public data new variations. These guidelines indicate that sick individuals should only break their isolation if they've been free of a fever, without the help of medication, for at least 24 hours. UC Davis Health is offering bivalent boosters for anyone at any of ourCOVID-19 vaccine clinic locations. Delta: 16.8 hours. I havent seen anything firm to suggest that these (symptoms) are more than anecdotal right now," says Pekosz. More than 60 percent of America's population is vaccinated, and the coronavirus itself is also different: The early evidence suggests with the omicron variant, people might recover and clear. Beta: 19.1 hours. 2023 Dotdash Media, Inc. All rights reserved, Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. doi:10.1126/science.abn4947. COVID data tracker. Immune boosting by B.1.1.529(Omicron) depends on previous SARS-CoV-2 exposure. If you remained asymptomatic for your illness, you can end your isolation after five days, but continue to mask around others for another five days. Those 65 and older can get second doses of the updated versions of Pfizer-BioNTech's and Moderna's Covid boosters at least four months after their last doses, the FDA said in a statement. Whether or not the difference in timeframe could be attributed to characteristics of the variants themselves, or to factors like vaccinations and natural immunity was unclear, according to the researchers. You can choose to delay the second booster shot if you wish to do so. Telehealth video visits and Express Care are also available. This is compared to surgical masks that reduce the rate of infection by about 60-70%, and greater than 80% for N95s. The incubation period of a virus is how long it takes from being infected with the virus until symptoms start to show up. A handful of new siblings are being . As far as how long these Omicron symptoms last, research shows that people have acute symptoms for about six to seven daysabout two days shorter than Delta's eight to nine days of acute. As far as how long these Omicron symptoms last, research published in April 2022 in The Lancet shows that people have acute symptoms for about six to seven daysabout two days shorter than. However, if you were in a situation where people were outside, masked and distanced, the risk of infection is much lower. The study also found that the severity of Delta and Omicron hospitalizations were comparable for people admitted to the hospital, but that people with Omicron appeared less likely to be admitted to the hospital to begin with. sign up to get four free COVID test kits that are mailed to you from the federal government, upgrading your face masks to N95s or KN95s, schedule a telehealth video visit with Express Care, California Department of Public Health: COVID-19, Centers for Disease Control: Coronavirus (COVID-2019), World Health Organization: Coronavirus disease (COVID-19) pandemic, Johns Hopkins real-time dashboard for COVID-2019 cases, long-term cognitive impairment, including dementia. It's becoming more and more difficult to compare new variants to old variants, because we're getting so much more immunity in the population, Andrew Pekosz, PhD, a virologist and researcher at Johns Hopkins Bloomberg School of Public Health, told Verywell. NYC ER Doc Breaks Down How Omicron Affects the Boosted, Vaxxed and Unvaccinated According to well-known Manhattan ER doctor Craig Spencer, the omicron variant can be as mild as a cold - with. Learn more about the difference between quarantine and isolation. Anyone with Omicron infection, regardless of vaccination status or whether or not they have symptoms, can spread the virus to others. These individuals . Yes. "There are additional treatment options available for vaccinated people over age 65, or those with high-risk comorbidities that experience a breakthrough COVID case," Boden-Albala adds. WiseJ.Covid-19: Omicron infection is poor booster to immunity, study finds. Does omicron BA.5 cause more severe illness than other strains of COVID-19? Read our. 2023 Dotdash Media, Inc. All rights reserved, Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Here are all known COVID-19 symptoms associated with the current Omicron subvariant wave, according to the CDC: Healthcare experts have established in the past that SARS-CoV-2 variants may trigger one set of symptoms more commonly than others and the same is true for the current viral Omicron subvariant, BA.2.12.1. Hay J, Kissler S, Fauver J, et al. What do these omicron variants tell us about future COVID-19 strains? If you test positive, then you should isolate. 2022;607(7918):356-359. doi:10.1038/s41586-022-04830-x. Studies suggest that Omicron infections can last in the body for up to 10 days. But a few existing studies suggest people are unlikely to remain infectious after 10 days. How long does Omicron last? Khan, K, Karim, F, Cele, Set al. This includes an increased risk for: Read more: 9 things we've learned about long COVID so far. Young people are more likely to die of heart attacks post-COVID, study finds. As of May 19th, over 45% of the U.S. population is in an area with a medium or high COVID-19 Community Level.At high COVID-19 Community Levels, people should be masking.At medium levels, people should consider masking based on personal risk. U.S. Centers for Disease Control and Prevention, Still testing positive for COVID-19 after 10 days? If you do have symptomswhich can range from a scratchy throat to a headacheseek testing immediately. A new omicron subvariant, XBB.1.16, is spreading in the United States, and some doctors are reporting that it may be causing unusual symptoms. Still, experts say there's not a big difference between an Omicron infection and a Delta infection. How Long Do Symptoms from Omicron Last? Infection also confers high levels of protection against symptomatic COVID-19 illness. Learn how to schedule your COVID-19 vaccine at UC Davis Health. doi:10.1126/science.abq1841. Even if XBB.1.16 is better at evading immunity from the vaccine, it can still provide some protection, the experts note. For some, symptoms last as much as 10 to 14 days. Jansen L, Tegomoh B, Lange K, et al. It (also) has at least two mutations in the spike proteins that will probably cause it to evade some amount of vaccine-induced immunity or immunity-induced by infection with XBB.1.5, says Pekosz. Every time COVID-19 infects someone, theres a chance for more mutations, which can allow the virus to keep spreading. During the week ending June 11, the two subvariants accounted for 21.6 percent of cases in the country, up from . However, the level of protection tends to vary among different COVID variants. Particularly if you're vaccinated, as soon as symptoms go away, you're pretty much not going to be transmitting the virus to anybody.". Although it can vary, people are generally contagious between 1-3 days before omicron symptoms show. COVID Is 'Still Here': Experts Say Masking This Fall and Winter Is a Good Idea, What You Should Know About BA.2, a SARS-CoV-2 Omicron Variant, COVID-19 Boosters Are Being Updated To Target Omicron SubvariantsHere's Why, BA.2.75 Is the Newest Omicron SubvariantHere's What We Know So Far, Awareness of SARS-CoV-2 Omicron variant infection among adults with recent COVID-19 seropositivity, Investigation of a SARS-CoV-2 B.1.1.529 (Omicron) variant cluster Nebraska, NovemberDecember 2021, At-Home COVID-19 antigen tests-Take steps to reduce your risk of false negative: FDA safety communication, SARS-CoV-2 B.1.1.529 (Omicron) Variant United States, December 18, 2021, Symptom prevalence, duration, and risk of hospital admission in individuals infected with SARS-COV-2 during periods of Omicron and Delta variant dominance: A prospective observational study from the ZOE COVID Study, Decreasing incidence of chemosensory changes by COVID-19 variant. Accurately measuring a change in the interval between infection and reinfection is challenging because there are so many factors that determine the risk of reinfection, Moss said. However, thats just an estimate. https://t.co/x7uA1gT4ja pic.twitter.com/OG7dOtOE0J. The most commonly-reported symptoms with the original Omicron variant were cough, fatigue, headache, congestion, and runny nose. The bivalent booster vaccine is approved by the U.S. Food and Drug Administration (FDA) and Centers for Disease Control and Prevention (CDC). doi:10.15585/mmwr.mm7114a2, Pulliam JRC, Schalwyk CV, Govender N, et al. I havent heard of any long-term consequences (to the eyes). A recent study published in Science confirmed that the Omicron variant has a pronounced ability to evade immunity from prior infection, unlike the Beta or Delta variants. At-Home COVID-19 antigen tests-Take steps to reduce your risk of false negative: FDA safety communication. "The current recommended vaccines are effective at preventing serious disease for all of the omicron variants," says Schaffner, adding that it seems like they will do the same for XBB.1.16. The fast-growing COVID-19 variant already has a nickname on social media: Arcturus, named after the brightest star in the northern celestial hemisphere. However, its still important to get vaccinated to increase the protection against infection and minimize the risk of severe outcomes from the disease. Interval Between Infection and Reinfection May Be Shorter. Feeling sick while experiencing a breakthrough infection is entirely likely, though, as upwards of 60% of all breakthrough illnesses resulted in mild illness that didn't require hospitalization, according to materials published by the American Medical Association (AMA). Updated Jan. 27, 2023 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. New research finds that with each repeat COVID infection even asymptomatic infection your risk for complications increases. Those with COVID-19 typically develop symptoms 3-4 days after being infected. You should also quarantine, watch for COVID-19 symptoms, stay away from others in your home, and wear a mask. "Reinfection is less likely in the weeks to months after infection," the CDC guidance page reads. "Certain factors, such as personal risk of severe disease, local COVID-19 community level, and the dominant COVID-19 variant, could be reasons to get a vaccine sooner rather than later. But experts have eagerly documented current and earlier Omicron-based outbreaks in major cities across the country, allowing them to have a better idea of how well vaccines are protecting individuals and influencing recovery periods in 2022. Active epidemiological investigation on SARS-CoV-2 infection caused by Omicron variant (Pango lineage B.1.1.529) in Japan: Preliminary report on infectious period; Published online January 5, 2022. Your previous immunity does not protect you from the latest strain. Centers for Disease Control and Prevention. This specific variant has been noted to cause upper respiratory issues that some may easily mistake for seasonal allergies; early symptoms often include scratchy or sore throat, sneezing, or a runny nose. Breakthrough infections, too, are expected to occur with Omicron and its subvariants. How Long Do Breakthrough COVID-19 Symptoms Last? To protect against omicron BA.5, health experts recommend the following: Most people who test positive with any variant of COVID-19 typically experience some symptoms for a couple weeks. But its alright if you dont want to get the shot right away. Generally speaking, Omicron and its subvariants cause more mild disease than previous variants like Delta. Since the bivalent boosters, known as the "updated boosters" are so new, there is no effectiveness data available yet.
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