can nasal spray affect covid testcan nasal spray affect covid test

can nasal spray affect covid test can nasal spray affect covid test

Coronavirus (COVID-19) update: FDA authorizes first COVID-19 test for self-testing at home. Accessed Oct. 29, 2020. The timing, temperature, and even what you eat before getting tested could affect your results. Nucleic Acid Amplification Testing (NAAT) There are two main types of tests for COVID-19. A molecular biologist explains, Home rapid antigen testing is on its way. If you have symptoms, you risk unknowingly spreading the virus to others if you don't take proper precautions, such as wearing a face mask when appropriate. Thank you, {{form.email}}, for signing up. Your doctor may recommend repeat testing if you continue to have symptoms. Emerg Microbes Infect. Heres how to make the most of these rapid antigen tests, and to increase your chance of a meaningful result. Most of the rapid antigen tests available are currently only authorized for nasal collection, but infectious disease experts aren't surprised to hear that people who tested negative after a nasal swab nonetheless test positive after swabbing their throats. They enter, make a ton of copies of themselves, burst open the cell, and then infect more cells. Butler-Wu clarified that this risk is pretty theoretical. J Med Virol2020. When will COVID-19 vaccines be available for children? , an epidemiologist with the University of California, Irvine, respiratory viruses like SARS-CoV-2 can infect all parts of our respiratory tract, which is basically anything that brings air into your body this includes your nose, throat, mouth, windpipe and lungs. Now Is the Time to Start COVID Testing, What to Do If You Get a Positive At-Home COVID-19 Test Result, PCR vs. The time course of the immune response to experimental coronavirus infection of man. Don't use a test that has expired. If you get a positive result, follow up as soon as possible with a PCR test to confirm and self-isolate in the meantime. A positive antigen test result is considered accurate when instructions are carefully followed. If they need to send out the sample, your results may not be available until a few days later. Have something youd like us to verify? You may have noticed that more and more people are testing positive for COVID-19 after using a rapid test to swab their throats. Does Health Insurance Cover At-Home COVID Tests? The FDA, and the manufacturers of the test kits, need to hop on this and start doing some studies, Noymer said. In fact, some flu viruses are more culturable in the throat than the nose. By clicking Accept All Cookies, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. Brittany Murray/MediaNews Group/Long Beach Press-Telegram via Getty Images, NOW WATCH: Why South Korea's coronavirus curve looks so different from the United States, a BinaxNow test kit I bought at Walgreens, coffee and Coca-Cola could cause false positives, temporarily wipe the virus out of your mouth, rapid tests might not be very good at detecting Omicron, Abbott BinaxNow and Quidel QuickVue antigen tests. These include not only the instrument and chemical reagents used to perform the test, but also the timing and quality of specimen collection and the biology of the individual patient. We probably want a more targeted drug that retains some of the benefits of steroids but dont broadly suppress the immune system, Singanayagam says. By preventing the absorption of the virus if it's on or in your nose. According to Andrew Noymer, an epidemiologist with the University of California, Irvine, respiratory viruses like SARS-CoV-2 can infect all parts of our respiratory tract, which is basically anything that brings air into your body this includes your nose, throat, mouth, windpipe and lungs. A health care professional collects a fluid sample by inserting a long nasal swab (nasopharyngeal swab) into your nostril and taking fluid from the back of your nose. You are more likely to get false negatives (the test indicates you dont have COVID-19 when you do), or false positives (the test indicates you have it when you dont). Sign up belowto be added to ourDaily Health Stories distribution list. Rapid testing has become a popular tool in the coronavirus pandemic, especially during the initial Omicron wave in 2021. CDC's influenza SARS-CoV-2 multiplex assay and required supplies. In contrast to nucleic acid testing, which directly detects the virus, antibody or serology testing is used to detect an immune response in the patient. So a sensitive test is less likely to provide a false-negative result and a specific test is less likely to provide a false-positive result. What does the CDC's new guidance for people who have been fully vaccinated against COVID-19 mean? The information in this article is current as of the date listed, which means newer information may be available when you read this. Over-the-counter test kits typically have a sticker on the box indicating an expiration date and manufacturing date. Ideally, samples should be collected near the time of symptom onset to achieve the highest test sensitivity.1 Patients who are infected but not yet symptomatic may have false-negative test results, as may those whose symptoms are waning. You can buy some antigen tests over the counter with no prescription needed, though antigen tests are not considered as reliable as PCR tests. How to protect yourself and others. You may opt-out of email communications at any time by clicking on In studies, antibody tests that detected both IgG and IgM were positive in 90% of symptomatic individuals by days 11-24.6,7, SARS-CoV-2 hasnt been around long enough for investigators to know whether detectable antibodies may decline or even disappear over time. However, the accuracy of rapid antigen tests improve if you do them when you have symptoms or within seven days of a potential exposure. Centers for Disease Control and Prevention. For example, with a nasal swab you will be asked to insert the swab 2cm, rotate the swab five times, and do this in both nostrils. Send us an email to verify@10tv.com. Dr. Zein said they are still trying to understand why the nasal sprays seem to help reduce severity of disease. Most of the rapid antigen tests available are currently only authorized for nasal collection, but infectious disease experts arent surprised to hear that people who tested negative after a nasal swab nonetheless test positive after swabbing their throats. 2023 BuzzFeed, Inc. All rights reserved. Frank is optimistic that nasal antiseptics can help prevent the spread of COVID-19 in three ways: By helping to prevent asymptomatic patients from spreading COVID-19. You're required to take a test for screening purposes, such as at some schools or workplaces. Only get an at-home test that's authorized by the FDA or approved by your doctor or local health department. Part of HuffPost Wellness. Blow your nose beforehand so that you get a good sample. In the U.S., a COVID-19 diagnostic test may be needed if: But even in cases when a test might be suggested, you may not need to test if you've had COVID-19 in the last 30 days and you don't have symptoms. Monday - Friday 7am - 5pm (EST). "The test is only as accurate as the quality of the sample you get, so closely follow the directions for a nasal swab as indicated by the manufacturer," Scuderi said. We'll personally contact you soon for confirmation. Saliva is another specimen type that is being explored, but the jury is still out on that one. Test for current infection. Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below. The virus also can spread through a cough or a sneeze. Avoid contact with others in the meantime. How Long Do Steroids Stay In Your System? They're the. The test is intended to pick up certain proteins from the virus, so the goal is to swab the cells that live on your nasal walls. https://www.covid19treatmentguidelines.nih.gov/overview/sars-cov-2-testing. Coronavirus testing basics. Many Factors Can Affect Sensitivity, Specificity of Test Results, Comparative accuracy of oropharyngeal and nasopharyngeal swabs for diagnosis of COVID-19, Neutralizing antibody responses to SARS-CoV-2 in a COVID-19 recovered patient cohort and their implications. False-positive results mean the test results show an infection when actually there isn't one. Sensitivity and specificity under real-world conditions, in which patients are more variable and specimen collection may not be ideal, can often be lower than reported numbers. If you test negative, taking the test a second time a few days later can help ensure your test results are accurate. 216-444-0141 If people without symptoms have a positive test result, they should follow guidelines for self-isolation to help curb the spread of the virus. This video has been made to be watched by children as young as 4 years old. What's the difference between a PCR and antigen COVID-19 test? Mayo Clinic is a not-for-profit organization. Callow KA, Parry HF, Sergeant M, Tyrrell DA. Some of these tests require a provider's prescription. Though the rapid test kit manufacturers recommend using the tests only as instructed (in other words, only doing a nasal swab), growing anecdotal evidence suggests it might be worth safely swabbing both your throat and nose. Self-testing. Last December, it was confirmed that the Abbott BinaxNow and Quidel QuickVue antigen tests seemed to detect Omicron as accurately as other variants, according to laboratory studies and an FDA review. But they can still spread the virus that causes COVID-19 to others. some tests need to be at room temperature for 30 minutes before use. Coronavirus (COVID-19) update: FDA authorizes first COVID-19 and flu combination test for use with home-collected samples. But after more than five days of symptoms, the virus tends to be more concentrated in the lower respiratory system. The nose is the most important part and they need to cover it. Centers for Disease Control and Prevention. When you swab your nose, you are looking to see if there is virus replicating there.. You can now buy rapid antigen tests in supermarkets and pharmacies to test yourself at home for COVID-19 in about 15 minutes. You then place that chemical solution containing your sample onto an People are increasingly opting for at-home rapid COVID tests because of their convenience and quick turnaround time. Centers for Disease Control and Prevention. The study is observational; researchers need to conduct clinical trials to know whether whether this is a safe and effective COVID-19 prevention approach. However, getting samples from both may be the best practice, Adalja said. It took three days, on average, for people to test positive on a rapid antigen test after their first . Thank you, {{form.email}}, for signing up. Depending on the situation, the health care provider may recommend a RT-PCR test to confirm a negative antigen test result. To get accurate results, you have to obtain a good sample. Accessed Feb. 10, 2022. Its certainly not recommended instead of it, Strauss tells Verywell. Accessed May 28, 2020. Corticosteroids may also block the virus from infecting cells. And its the combination of these that gives the result: if the C coloured line fails to show, the test is invalid. Mayo Clinic Q&A podcast: COVID-19 testing scenarios -- what test and when? Laboratory diagnosis of emerging human coronavirus infections - the state of the art. Centers for Disease Control and Prevention. Mayo Clinic Q&A podcast: Continuing progress in battle against COVID-19, Covid Queries: Altered DNA and microchips, Mayo Clinic Q and A: Medications in use and being tested for treatment of COVID-19, The best medicine for COVID-19 is prevention, Responding to increased demand for COVID-19 testing, vaccines and implementing visitor restrictions, What you need to know about COVID-19 tests, COVID-19 vaccine urgency as delta variant continues to spread, Rapid exclusion of COVID-19 infection using AI, EKG technology, Recent COVID-19 infection could affect recommended timing of your COVID-19 vaccination, Mayo Clinic Q&A podcast: A dangerous phase of the COVID-19 pandemic for those unvaccinated. This COVID-19 test detects certain proteins in the virus. https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-authorizes-first-direct-consumer-covid-19-test-system. These tips come from analysing instructions on the TGA website about how to use approved rapid antigen tests. National Institutes of Health. When swabbing the nose for a rapid at-home antigen test, make sure that you rub the collection tip of the swab against the walls of your nose. Regardless of which test you use, instructions can ask you to clean a flat surface; wash or sanitise and dry your hands; and lay out the test items. Accessed Feb. 10, 2022. Some of the more popular tests may have a demonstration video online to help.. Nasal Sprays Could Protect You From Serious COVID-19 Illness. So, that's exactly what the researchers did, using the Abbott Panbio COVID-19 Ag Lateral Flow Test. Here's why and how to do it. A person may not get enough sample to detect virus if they do the nasal test incorrectly or do not go deep enough. A nasal swab can be uncomfortable, but it must be done correctly, otherwise, the test will not provide you with accurate results. However, the sensitivity of these tests varies based on both the timing and the way the sample is collected. Why this happens is unclear, but Noymer said its likely due to a mix of viral factors like where and how the virus replicates and human factors. Although parts of the post were true like the fact that genetic tests can use cheek swabs and respiratory droplets can transmit COVID-19 the suggestion that nasal tests are unnecessary is . Inhaled corticosteroids work similarly to nasal sprays. How COVID-19 Might Affect People With Rheumatoid Arthritis, What to Know About Chronic Kidney Disease and COVID-19. So it cannot prevent COVID infection, but researchers found patients who use steroid nasal sprays are less likely to develop severe COVID-19 -- by as much as 25%. Recent studies suggest rapid tests detect Omicron, but only if you're using the at-home test right. A: Although we know certain bacteria and fungi can be carried on fur and hair, there is no evidence that viruses, including the virus that causes COVID-19, can spread to people from the skin, fur . Because of this, the nasal passageway is a major portal of entry for the virus, the authors write. Self-testing. However, it appears they decrease the ACE2 receptors in the nose, making it harder for the virus to enter cells and spread. Many people you see wearing a mask dont have their nose covered. According to the complaint, since at least March 2020, Xlear and its founder and president, Nathan Jones, have promoted Xlear nasal sprays by falsely claiming they provide four hours of protection against infection from the coronavirus and therefore are "a simple, safe, and cheap option that could be an effective solution to the pandemic . Dr. Zein said since the nose is the main entry point for the virus, its important to wear your mask properly. Most patients have detectable IgG antibodies by day 14 following symptom onset, and the likelihood of detection increases over time. Copyright 20102023, The Conversation Media Group Ltd. Heres how one COVID-19 rapid antigen test works. Singanayagams team published a study earlier this year showing that steroid inhalers reduced the number of ACE2 receptors in animal models and human cells. Or you may spit into a tube to produce a saliva sample. Using a long nasal swab to get a fluid sample, some antigen tests can produce results in minutes. Marshall, WF III (expert opinion). Rapid antigen tests are useful if you want to quickly check whether you have COVID-19. Researchers found that for people who regularly used a prescription corticosteroid like Beconase or Nasonex before getting sick with COVID-19, the risk of severe outcomes like hospitalization and death dropped by as much as 25%. The preliminary data look really promising. If you have symptoms, stay away from others. But dont go running to the pharmacy for Flonase just yet, Singanayam says. Some scientists suspect saliva (throat) swabs may be more useful for detecting omicron since the variant replicates more efficiently in the upper respiratory tract. You should also avoid brushing your teeth or using mouthwash before a throat swab, since good oral hygiene could temporarily wipe the virus out of your mouth and lead to a false negative. It may reduce the duration of illness, and also may reduce the amount of virus that someone sheds. The study published in the Journal of Allergy and Clinical Immunology: In Practice in August 2021 suggests steroid nasal sprays may help improve outcomes in severe COVID-19 disease. Claire Bugos is a staff reporter covering health and science for Verywell. Others may be sent to a lab for analysis. Testing for SARS-CoV-2 infection. COVID-19 tests, whether a rapid antigen test or a PCR test sent to a lab, do tend to be accurate on the positive side (if the test says you have COVID, you most likely do), but they can sometimes deliver false-negative results, especially the antigen (rapid) tests. Importance Recent studies suggest that theophylline added to saline nasal irrigation (SNI) can be an effective treatment for postviral olfactory dysfunction (OD), a growing public health concern during the COVID-19 pandemic.. Read our. As with all lab tests, a number of factors determine the accuracy of a COVID-19 test result. When used properly, these irrigations are a safe and easy intervention available over the counter without a prescription. But we need to make sure everyone has access, Goodbye, brain scrapers. Her additional health-related coverage includes death and dying, skin care, and autism spectrum disorder. How do COVID-19 antibody tests differ from diagnostic tests? It's being studied as a potential way to prevent mild to moderate cases of COVID-19. Here's what Australia can learn, What's the difference between a PCR and antigen COVID-19 test? Accessed Dec. 9, 2020. You'll need to isolate for at least five days. What Should You Do If You Feel Sick but Keep Testing Negative for COVID? So plan ahead. Some scientists suspect saliva (throat) swabs may be more useful for detecting omicron since the variant replicates more efficiently in the upper respiratory tract. How Can You Tell If a COVID Test Is Fake? The little vials of liquid meant to be mixed with your sample are not designed to withstand extreme temperatures or humidity. Sign up for notifications from Insider! Nose or throat swab. Development and clinical application of a rapid IgM-IgG combined antibody test for SARS-CoV-2 infection diagnosis. By clicking Accept All Cookies, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. West CP, et al. https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/prevention.html. Wang W, Xu Y, Gao R, et al. If we combine this information with your protected Nasal steroid sprays may reduce the severity of COVID-19, according to a new study. A new study from the Medical College of Georgia at Augusta University has found that irrigating your nose twice a day with a saline solution after testing positive for Covid-19 can decrease. Nasal steroid sprays may reduce the severity of COVID-19, according to a new study. Centers for Disease Control and Prevention. In general, this is how the specimen should be collected: The instructions for the different manufacturers are a little different from one to another, Gigi Gronvall, PhD, senior scholar at the Johns Hopkins Center for Health Security at the Bloomberg School of Public Health, told Verywell. If you test positive for the COVID-19 virus, you may be asked to participate in contact tracing. Objective To evaluate the efficacy and safety of theophylline added to SNI compared with placebo for COVID-19-related OD. If you have no symptoms and don't think you've been in contact with someone with COVID-19, but you want to get tested, ask your health care provider or testing center whether and where testing is available. Accessed Jan. 13, 2021. Treatment with azelastine nasal spray greatly reduced the SARS-CoV-2 viral load in the study population: a reduction in viral numbers of around 97% (up to around 30-fold) was seen in those. We're available to shoot custom interviews & b-roll for media outlets upon request. Accessed Nov. 19, 2020. This was a question we recently got from a viewer. But still, test sites and kits that involve oral swabs will warn you to avoid eating, drinking, and smoking for at least 30 minutes before the test. If you have doubts about the accuracy of the result, you could try repeating the test over the next few days since your viral load could increase over the course of a few days. If your symptoms are predominately in your nasal passages, a nasal swab may be sufficient. It's crucial you swab your nose correctly to minimize the chance for error, and a possible false-negative test. 2021;147(2):510-519.e5. Accessed Feb. 10, 2022. COVID-19 testing: What you need to know. If you already use a nasal spray for seasonal allergies or other needs, you may be slightly protected against severe COVID-19 outcomes. While this happens you may feel like you want to push the Q-tip away, but it's really important to stay as still as possible so the health care provider can finish the test. A nasal and mouth spray called "IGM-6268" is in the early stages of clinical trials. This has never been more true than it is now, given the attention on COVID-19 testing and its role in helping to halt the spread of COVID-19. Specifically, your labeling claims, suggesting that CofixRX Nasal Spray is effective in preventing infection or disease from the novel coronavirus that causes COVID-19 and other viruses, go beyond . Multiple companies offer rapid antigen tests over the counter, with take-home kits often going for roughly $20 per two-test package. You might also use a rapid antigen test if you have COVID-19 symptoms and cant immediately get a PCR test. Whereas if you have a sore throat, likely whatever is deep in your nose has dripped down the back of your throat, Parikh said. Centers for Disease Control and Prevention. U.S. Food & Drug Administration. Centers for Disease Control and Prevention. The same review found that diagnostic tests from Applied DNA Sciences, Meridian Bioscience, and Tide Laboratories were more likely to return false negatives due to ineffective detection of the Omicron variant. "Don't use rapid tests when it's really cold. This may be somewhat uncomfortable. Nov. 9, 2020. Antigen tests normally require that the swab be inserted into the nostril. We can find that answer in a Cleveland Clinic Study. https://www.cdc.gov/coronavirus/2019-ncov/symptoms-testing/testing.html. You could be infectious and could be putting others at risk.. New research examined if mouthwashes, antiseptics, and a nasal rinse were effective ways to kill a virus very similar to COVID-19. A positive antigen test result is considered accurate when instructions are carefully followed. U.S. Food and Drug Administration. Fraud alert: COVID-19 scams. So more context is needed to answer this question. Accessed Aug. 26, 2022. You are looking for active virus, Gronvall said. You can collect the sample yourself at home using a nasal swab or saliva. Other companies have issued similar announcements, and it's possible we'll see the expiration dates pushed out further as the FDA continues to review stability studies. https://www.cdc.gov/coronavirus/2019-ncov/testing/self-testing.html. Thea van de Mortel teaches into the Graduate Infection Prevention and Control program at Griffith University. Meaning, if the results are negative, there could still . Covid Queries: Do I need the vaccine if I've had COVID-19? Only a single sample is needed to check for all three viruses. Mayo Clinic; 2022. Remember that during the test, the most important thing to do is to keep your body perfectly still. Click here for an email preview. Purvi Parikh, an adult and pediatric allergist and immunologist with. Does using a nasal spray or Neti Pot affect your COVID test? Many viruses and bacteria drip down from the nose to the throat. If you opt for rapid results over the waiting game, here are a few things to keep in mind that could affect your test. Carla M. Delgado is a health and culture writer based in the Philippines. Verywell Health's content is for informational and educational purposes only. include protected health information. https://www.cdc.gov/coronavirus/2019-ncov/testing/diagnostic-testing.html. Mayo Clinic. According to the National Institutes of Health, there is insufficient data to recommend the use of inhaled corticosteroids. This means that the test didn't detect the virus, even though you actually are infected with it. https://www.who.int/news-room/commentaries/detail/advice-on-the-use-of-point-of-care-immunodiagnostic-tests-for-covid-19. Negative result. U.S. Food and Drug Administration. One is a C (the control). Avoid eating, drinking or using antiseptic mouthwash for 30 to 60 minutes prior to swabbing your throat, as this can impact how much virus can be collected, Parikh said. privacy practices. Centers for Disease Control and Prevention. Rapid tests have always been second to polymerase chain reaction, or PCR, assays when it comes to accuracy. According to a study from March, at-home rapid tests are "not inferior among individuals infected with the SARS-CoV-2 Omicron variant as compared to the Delta variant.". CLEVELAND - A Cleveland Clinic study found that patients who regularly use steroid nasal sprays are less likely to develop a severe case of COVID-19. Journal of Allergy and Clinical Immunology. The BinaxNow kit, for instance, can be stored from 35.6 to 86 degrees Fahrenheit, but a fine-print warning says to make sure all test components are at room temperature before use. Both the C and T lines need to show up for a positive COVID result. Accessed Dec. 28, 2021. But the instructions for these at-home tests can be complex and tricky to navigate. The most important thing you can do during your test is to sit perfectly still like a statue. And they determined that no, it does not cause interference, meaning it doesn't cause falsely positive or falsely negative results.". That can diminish their benefit or their efficacy," Michael Mina, chief science officer of eMed, said on a call with journalists. This medical test will tell us if you have the virus. Susan Butler-Wu, who directs clinical testing for. But there's an increased chance of false-negative results meaning it's possible to be infected with the virus but have a negative result. 2021;S2213-2198(21)00906-5. doi:10.1016/j.jaip.2021.08.007. For this study, the povidone-iodine nasal antiseptic rinse they used had "low-dose" concentrations -- 0.5%, 1.25%, and 2.5% -- of the active ingredients and still was effective in containing COVID . Lately, the pollen count has been. For instance, you might have a family gathering coming up, with lots of vulnerable, elderly relatives attending, and want to keep them safe. Accessed Oct. 27, 2020. Among these people, over 10,000 patients were using prescription nasal sprays before becoming infected with COVID-19. Obtaining a good sample is necessary for getting. Take the swab out and repeat the process with the other nostril. In that case, you may get your results in less than an hour or on the same day that you're tested. this past week, and unlike most of the medical advice shared across social media, this tactic appears to be scientifically sound. Others may be sent to a lab for analysis. Accessed Oct. 30, 2020. Rapid antigen tests have long been used overseas to detect COVID. The CDC recommends use of nasopharyngeal (NP) swabs for molecular testing because in most patients, the nasopharynx, or the space above the soft palate at the back of the nose, appears to have the highest concentration of virus. A pre-print study from South Africa recently found that while PCR nasal swabs successfully detected all delta cases, they missed 14% of omicron cases while a saliva swab caught all omicron cases. Accessed Nov. 4, 2020. Accessed Oct. 28, 2020. The accuracy of each of these tests varies. Access your favorite topics in a personalized feed while you're on the go. You may have many feelings seeing the health care provider wearing different clothing, but know this person is caring and wants to help you. Intranasal corticosteroids are associated with better outcomes in coronavirus disease 2019 [published online ahead of print, 2021 Aug 23]. The theory wasand is now since we have these positive resultsthat if you can decrease ACE2 protein, that means there are fewer cells that can be infected with the virus, which would hopefully then lead to less severe COVID, Strauss says. This site complies with the HONcode standard for trustworthy health information: verify here. CDC updates and shortens recommended isolation and quarantine period for general population. other information we have about you. Susan Butler-Wu, who directs clinical testing for infectious diseases at the University of Southern California, told Insider that coffee and Coca-Cola could cause false positives if you're using an oral swab. So a negative test does not completely rule out having the COVID-19 virus. https://www.fda.gov/consumers/consumer-updates/coronavirus-testing-basics. We do know that immunity to other coronaviruses responsible for colds can wane after ONE year,8 whereas immunity to the more closely related SARS-CoV-1 lasts closer to three years.9 Finally, there is early but inconclusive evidence that children and some individuals with mild or asymptomatic SARS-CoV-2 infections may be less likely to develop detectable antibodies.10. Coronavirus disease 2019 (COVID-19): Frequently asked questions: Testing. By Carla Delgado Your community risk level is medium or high for the spread of, Work in a health care facility or as first responders, Live or work in long-term care facilities, such as nursing homes, or other places where people are housed closely together, such as prisons or shelters, If you have no symptoms but you've been in close contact with someone who has.

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