COVID-19 vaccine: Experts say swollen lymph nodes normal, not a worry for breast cancer. Difficulty breasting. Hello! I've posted about this before, but I have some enlarged lymph nodes in my neck and I think a few in my arm pit, and my mother told me today (she is aware of my concerns when it comes to these lumps) that the Covid vaccine can cause enlarged lymph nodes? The swollen lymph nodes can appear anywhere from 2 to 4 days after you receive the shot. We call it reactive adenopathy, and it's simply a reflection of how effective the COVID-19 vaccine is. A swollen lymph node in your armpit after a COVID-19 vaccine is completely normal. • Enlarged lymph nodes (swollen glands) in your underarm Use a cool damp cloth on your arm where you got the vaccine to help with soreness. The symptoms might be more intense after the second COVID vaccine injection, he explains, but soreness in and of itself isn't a red flag. Patients with cancer with a propensity for spread to ipsilateral axillary lymph nodes—breast cancer, melanoma, lymphomas—should have the COVID-19 vaccine in the axilla contralateral to the previously or potentially involved site. A bad rash all over your body. Around the world, reports are pouring in of people dying shortly after receiving the COVID-19 vaccine. A COVID-19 vaccine can cause enlarged lymph nodes in your armpit or near your collarbone on the side of your body where you received the injection. So to see so many people with lymph nodes … Posted: Mar 26, 2021 / 07:44 PM CDT / Updated: Mar 26, 2021 / 10:15 PM CDT. About 10% of women who have received the covid-19 vaccine have reported swelling in lymph nodes of the same arm where they received the shot, according to … Swollen nodes are a symptom of other ailments, including cancer. You should receive the second dose of the PfizerBioNtechCOVID-19 vaccine no earlier than 21 days and Moderna no earlier than 28 days after your first dose. They enlarge and get … The Society of Breast Imaging reported that 11.6% of patients who received the Moderna COVID-19 vaccine had swollen lymph nodes after the first dose, and 16% after the second dose. … “We know that some patients, a small subset, when they get their vaccine will actually have enlarged lymph nodes related to the normal immune response to the vaccine that can show up under their arms or even … Less common side effects after COVID-19 Vaccine AstraZeneca include: enlarged lymph nodes pain in limb dizziness decreased appetite stomach pain. The Centers for Disease Control and Prevention has an entire page devoted to what you should expect after receiving your COVID-19 vaccine. One notable case is baseball legend Hank Aaron, 86, who died January 22, 2021, 17 days after publicly getting vaccinated for COVID-19. While estimates vary, only about one in ten peoplevaccinated Why does this happen? Enlarged lymph nodes are common after the COVID-19 vaccine and are your body’s normal reaction to the vaccine. Don't panic if you see a lump on your armpit after COVID-19 vaccination, doctors say. My handout said I’d experience side effects for 48-72 hours after the shot. — … In clinical studies, This is … This mammogram, taken after a patient got the Covid-19 vaccine, shows a swollen lymph node. Also very common, in … Three hours after getting the COVID-19 Moderna vaccine Teresa Velasco's arm began to swell and a large red rash appeared. Purvi Parikh, MD, an immunologist with Allergy & Asthma Network and a co-investigator on COVID-19 vaccine trials at NYU, told Popsugar that swollen lymph nodes are just one way in which your body may show that it is building an immune response. Painful and swollen: that’s how a woman described the feeling in her underarm the day after she got the second dose of the COVID-19 vaccine. These can include: May 20, 2021. Severe allergic reaction may occur but is very rare. The Centers for Disease Control and Prevention has an entire page devoted to what you should expect after receiving your COVID-19 vaccine. Pain, redness, itchiness or swelling right away and/or 7 days after Swollen lymph nodes under armpit Tiredness or headache Muscle or joint soreness Nausea and vomiting Fever and chills Side effects are common a day or two after getting the COVID-19 vaccine. NurPhoto via Getty Images. Muscle pain; Joint pain; Chills; Swollen lymph nodes; General unwell feeling; Nausea and vomiting * An important note for women: It is common for axillary (armpit) lymph nodes to become enlarged on the side where the COVID vaccine was administered. Common side effects after COVID-19 Vaccine AstraZeneca include: pain, swelling, tenderness, redness or itching at the injection site ... joint pain. The Society of Breast Imaging reported that 11.6% of patients who received the Moderna COVID-19 vaccine had swollen lymph nodes after the first dose, and 16% after the second dose. If you experience swollen lymph nodes from a COVID-19 vaccine, this is actually a sign it is working. So my hypothesis is that I did have inflamed axillary lymph nodes post-vaccination, and those caused some kind of milk backup because of the inflammation and/or spread to lymph nodes along the breast. We present three cases of lymphadenopathy developed after Pfizer-BioNTech COVID-19 vaccination. COVID-19 Vaccine After Care: Pfizer-BioNTech and Moderna Vaccines. Health experts encourage patients to consider scheduling routine imaging for 4 to 6 weeks after … Surprising Side Effects of the COVID Vaccine, Say Doctors. The chances of getting sick after vaccination are minimal. by: Andi Ahne. It’s your body preparing a protective immune response. Some women are developing swollen lumps in their breasts as a result of the Covid-19 vaccine, according to US doctors.. The vaccine… However, there are some other side effects being reported by people post vaccination. In many cases, they die suddenly within hours of getting the shot. The swollen lymph nodes are appearing on the same side of the body as the COVID-19 vaccine injection. If you have recently gotten the Pfizer or Moderna vaccine, you may notice some … The lumps are in the body's lymph nodes — a … Swollen lymph nodes after Covid vaccine or clogged duct? So, to avoid anxiety or downright refusal of the vaccine, the Society of Breast Imaging Patient Care and Delivery Committee has developed a comprehensive … The enlargement can persist for several weeks after the vaccine. Studies show that people's lymph nodes may get enlarged after those vaccines, but in many cases it's so mild that we simply don't notice. Health authorities are looking into a possible link between COVID-19 vaccines and myocarditis in young people after receiving dozens of reports of mild heart problems after vaccinations. JACKSONVILLE, Fla. – The Centers for Disease Control and Prevention said the COVID-19 vaccine can cause swollen lymph nodes and potentially affect the results of a mammogram. Are swollen lymph nodes a common side effect of the COVID-19 vaccine? The first symptom of breast cancer that most women notice is … Story continues . Common side effects after COVID-19 Vaccine AstraZeneca include: • pain, swelling, tenderness, redness or itching at the injection site • tiredness • headache • muscle pain • nausea • fever and chills • feeling unwell • joint pain. Hello! Serious side effects after receiving the vaccine are rare. COVID-19 vaccine was 94.1% effective in preventing COVID-19 beginning 2 weeks after the second dose5. However, if you feel a lump in your … "If the lymph swelling subsides, then there is nothing more people need to do," she adds. In conjunction with the rapid administration of these vaccines, we have started to observe secondary effects on diagnostic imaging. The United States Food and Drug Administration issued emergency use authorization for two vaccines, Pfizer-BioNTech and Moderna COVID-19 vaccines, to help decrease COVID-19 infection and death in December 2020. The swollen lymph nodes typically appear a few days after the vaccine and tend to subside within a few days to a few weeks. The Society of Breast Imaging reported that 11.6% of patients who received the Moderna COVID-19 vaccine had swollen lymph nodes after the first dose, and 16% after the second dose. STATEN ISLAND, N.Y. — If you’ve recently received a coronavirus (COVID-19) vaccine, you may notice swollen lymph nodes, but that is actually a good sign, according to medical experts. “It usually shows up within two to four days after the vaccine and can last up to 10 days," Smetherman says. For most recipients of the covid vaccine, doctors say that swollen lymph nodes are a common response by the body. After their COVID shot, some people develop more severe swelling in the armpit than others. After some patients received a covid-19 vaccine, they reported that their lymph nodes were swollen and sore. Doctor says swollen lymph nodes are sign COVID-19 vaccine is working. In a new interview with CBSN, Dr. Anthony Fauci is not only warning against over-the-counter pain relievers for 30 days after you have taken the COVID vaccine. JACKSONVILLE, Fla. – The Centers for Disease Control and Prevention said the COVID-19 vaccine can cause swollen lymph nodes and potentially affect the results of a mammogram. A fast heartbeat. JACKSONVILLE, Fla. – The Centers for Disease Control and Prevention said the COVID-19 vaccine can cause swollen lymph nodes and potentially affect the results of a mammogram. 1. Two mammograms compare a patient’s breast days after receiving a COVID-19 vaccine, left, to a scan five years earlier. The implications of swollen lymph nodes following COVID-19 vaccination. Lymph node removal and lymph node radiation may lead to lymphedema after cancer treatment. COVID vaccine side effects have produced an array of unusual symptoms. If you experience pain at the injection site or fever, headaches or body aches after vaccination, you can take paracetamol or ibuprofen. The COVID-19 vaccine may affect women differently. However, if you feel a lump in your armpit that … The most common side effects of the COVID-19 vaccines have been: pain or soreness in the arm where you receive the injection tiredness headache muscle or joint pain chills fever; These side effects are usually minor, last a few days, and happen more often after the second dose. Apparently, swollen lymph nodes are a common response by the body. COVID-19 Vaccine Care after immunization Does the vaccine have side effects? Our goal is to create a safe and engaging place for users to connect over interests and passions. Upon clinical examination, it was revealed that 15 days earlier she had received the first shot … Swollen lymph nodes after the Covid vaccine could be mistaken for breast cancer, doctors say Credit: Getty Images - Getty The first symptom of breast cancer that most women notice is a … Take pain or fever medication (such as acetaminophen or ibuprofen) to help with pain or fever, if needed. Vaccine recipients reported higher rates of local reactions after dose 2 than dose 1. Most FDG avid lymph nodes were of normal size (mean 0.5cm, range 0.1–1.6 cm). A new retrospective Radiology research letter has determined that FDG uptake in axillary lymphadenopathy persisted seven to 10 weeks after the second mRNA-based COVID-19 vaccine. Lauren Pastrana reports swollen lymph nodes, particularly in the armpit area, can also be a sign of breast cancer. Pfizer-BioNTech, Moderna, AstraZeneca-Oxford and Janssen have all reported similar side effects with their COVID-19 vaccines: redness, pain or swelling at the site of injection, fatigue, headache, muscle pain and fever. “We know that some patients, a small subset, when they get their vaccine will actually have enlarged lymph nodes related to the normal immune response to the vaccine that can show up under their arms or even … The swollen lymph nodes are … The Food and Drug Administration lists a couple of additional side effects for the Pfizer-BioNTech vaccine specifically, including muscle pain, joint pain, nausea and swollen lymph nodes. But little was known about the duration and prevalence of axillary lymph nodes after the second COVID-19 vaccine. “This is a normal and expected reaction related to the body’s immune response to the vaccine,” says Lisa Ann Mullen, M.D. I had mild pain and enlarged lymph nodes deep in my underarm on the arm i received the moderna covid vaccination which started exactly one week after the 1st injection. “Swollen lymph nodes can be a response to many different vaccines, including the COVID vaccine… COVID-19 Vaccine Side Effect Impacts Lymph Nodes. The increased fluid in the lymph nodes near the injection site commonly causes muscle pain, and sometimes armpit or breast pain. Swollen lymph nodes after Covid-19 vaccination: what women should know For many women, swollen lymph nodes are a red flag pointing to breast cancer – but may also be a normal immune reaction to a Covid-19 vaccination. I received the Moderna Covid19 vaccine Monday morning and happily had few side effects - mild fatigue, mild headaches, moderate pain at injection site, but mostly fine for a few days. A 47-year-old woman, generally in good health, presented to the Hematologic Clinic with a new non-painful left infraclavicular lump to rule out lymphoproliferative disease. Lymph nodes in the armpit area can become swollen after a COVID-19 vaccination, and this is a normal reaction that typically goes away with time. They typically occur under the arm where the shot … He is, however, correct about vaccines in general and that the claim that the COVID-19 vaccine causes “breast inflammation” is BS; it causes local inflammation that can result in enlargement of the local lymph node basis, where lymph nodes do what lymph nodes, being part of the immune system, do when they encounter lymph drainage from an area of inflammation. Follow-up is required, but the condition is often a natural immune response that resolves on its own. Pfizer-BioNTech, Moderna, AstraZeneca-Oxford and Janssen have all reported similar side effects with their COVID-19 vaccines: redness, pain or swelling at the site of injection, fatigue, headache, muscle pain and fever. Early research shows women are reporting stronger side effects than men after getting their shots. This means that people may not be fully protected against COVID-19 until at least 14 days after … Swollen lymph nodes can also be a side effect of viral infections, and certain flus; an immune response, such as that which the body experiences after vaccination, appears to … "However, if the nodes … Nuclear medicine technologists should document vaccine site, date, type, and first vs second dose. Another common symptom of the vaccine is swollen lymph nodes under the arms on the side of the body where you received the vaccine, per the Cleveland Clinic. CHARLESTON, S.C. (WCBD) – If you’ve received a COVID-19 vaccine, you may have noticed some swollen lymph nodes. The challenge is that when your health care team sees swollen lymph nodes on a mammogram, they will want to evaluate that … Many people have no side effects from the COVID-19 vaccine. Side effects are expected and are actually a sign that the vaccine is working by causing an immune response. Advanced planning can support our patients to feel confident and safe to receive their vaccinations as well as undergo recommended imaging in their usual care. Swollen lymph nodes after COVID-19 vaccine may indicate prior infection, early research suggests. However, should you develop any signs and symptoms that could be an allergic reaction soon after vaccination, seek medical attention right away from the clinic staff, or call … Recent research has found those reporting this side effect experienced it in the axilla (basically the arm pit) of the injected arm several days after vaccination. Tenderness and pain in the lymph nodes; Swelling that may be the size of a pea or kidney bean, or even larger in the lymph nodes; Depending on the cause of your swollen lymph nodes, other signs and symptoms you might have include: Runny nose, sore throat, fever and other indications of an upper … About 16% develop enlarged nodes after they get the second dose of vaccine. Swollen lymph nodes after the Covid vaccine could be mistaken for breast cancer, doctors say Credit: Getty Images - Getty. "If patients feel swollen underarm lymph nodes after COVID vaccination and there are no other symptoms or signs of breast cancer as described above, then they need to monitor their nodes for few days/weeks to see whether they return back to normal," advises Dr Kechagioglou. Doctors warn not to confuse swollen lymph nodes from COVID vaccine with signs of cancer Local News. People Are Reporting Unexpected Side Effects After COVID-19 Vaccination—But That's Actually Normal ... joint pain, swollen lymph nodes, hives, rashes and … Swollen lymph nodes are typically a warning sign but for women who have recently gotten the COVID vaccine, these bumps are typically not cancers. If lymph nodes have been removed or damaged in one part of the body, such as in the arm, the vaccine won’t be able to travel through the lymphatic system and drain to the lymph nodes. Lymph node swelling is a known side effect of the COVID-19 vaccine and is your body’s normal reaction to the vaccine. swelling (14.7%) swelling of armpit lymph nodes, specifically (19.8%) redness (10%) People who have had other authorized COVID-19 vaccines have … Swollen Lymph Nodes Under Armpit After COVID-19 Vaccine May Mimic Breast Cancer Symptoms—Here’s What to Know this link is to an external site … The Moderna COVID-19 vaccine was found in clinical trials to cause the side effect lymphadenopathy, or swollen lymph nodes - also a symptom of breast cancer. Case 1. However, some people might not see a single side effect after the immunisation. New FDG avid axillary lymphadenopathy 62 days (9 weeks) after second mRNA vaccination dose. Your body is producing new antibodies to protect against the real disease. COVID-19 vaccines can cause mild side effects after the first or second dose, including: Pain, redness or swelling where the shot was given; Fever; Fatigue; Headache; Muscle pain; Chills; Joint pain; Nausea and vomiting; Swollen lymph nodes; Most side effects happen within the first three days after vaccination and typically last only 1 to 2 days. I read this side effect was not common with the moderna covid vaccine. mRNA Vaccine. Your lymph nodes filter substances throughout your body, and are in your neck, armpits, goin and elsewhere. When people have vaccines in their upper arm, it’s normal for the lymph nodes in the armpit on that side of the body to be activated and swell. They noted that the side effect, which appears like swollen lymph nodes and is being mistaken for breast lumps, is the body’s normal response to the vaccine, There are immune cells in your lymph nodes that are activated by the vaccine, and the ones near your armpit may be the most … Because a common side effect of the COVID-19 vaccines are temporary swollen lymph nodes, which can show up on imaging scans in the days and weeks after vaccination. While uncomfortable, this side effect is a … She knew a possible side effect was enlarged lymph nodes. I received the Moderna Covid19 vaccine Monday morning and happily had few side effects - mild fatigue, mild headaches, moderate pain at injection site, but mostly fine for a few days. TORONTO -- As more Canadians receive COVID-19 vaccines, more and … Purvi Parikh, MD, an immunologist with Allergy & Asthma Network who is also a co-investigator on COVID-19 vaccine trials at NYU, told POPSUGAR … If you are concerned, contact your physician. New reports show that about 20 per cent of people who received the COVID-19 vaccine are experiencing swollen lymph nodes. Depending on the amount of swelling, some people may notice their lymph nodes are larger, and these lymph nodes may feel tender or painful to the touch. The lymphatic system is home to your immune system; so when you get checked out for a cold or strep throat or flu, your doctor will feel your neck area. Just note that the COVID-19 vaccine itself may also lead to swollen lymph nodes as a side effect, particularly in the armpit area on the side you received the injection. A coronavirus vaccine side effect is causing concern for women — swollen lymph nodes after the shot… We urge you to get the COVID-19 vaccine when you become eligible. Milch's colleagues reading mammograms across the country … Pre-COVID Vaccine Advice. Enlarged lymph nodes are common after the COVID-19 vaccine and are your body's normal reaction to the vaccine. BOSTON – Lymph nodes in the armpit area can become swollen after a COVID-19 vaccination, and this is a normal reaction that typically goes away with time. Swollen lymph nodes are a sign of breast cancer, but can also be due to a Covid-19 vaccine if the patient was vaccinated just before their mammogram. These side effects are usually mild and usually go away within one or two days. In fact, the Society of Breast Imaging (SBI) issued a recommendation earlier this year that women should wait to get a mammogram after their COVID-19 vaccine. April 30, 2021 -- People who experience particular side effects after receiving a COVID-19 vaccine, such as swollen lymph nodes, may have previously … Doctor say this is normal. A small, but not insignificant number of people develop unilateral axillary adenopathy in the days following vaccination against SARS-CoV-2, the virus that causes COVID-19. Studies show even if you develop COVID-19 after being vaccinated, you are unlikely to get severely ill. Doctors in the area are saying some patients are confusing a COVID vaccine side-effect with signs of cancer. The day before, Rogers had her second COVID-19 shot, the Pfizer vaccine. Believe it or not, that’s actually a … Like a sore arm or slight fever, lymph nodes enlarged by the immune system’s response to a COVID-19 vaccine are virtually always a sign that the shot is doing its job. After receiving the COVID-19 vaccine, please remain in the clinic area for 15 minutes. Common side effects include pain or swelling, tiredness, headaches, muscle pain, fever, chills and joint pain. If you do have side effects, they tend to be mild and go away in a few days. The frequency of local reactions was higher in the younger age group (aged 18 to 64 years) than the older age group (aged ≥65 years) (90.5% vs 83.9% after dose 2). • enlarged lymph nodes • pain in limb • dizziness • decreased appetite • stomach pain. “Wait a few weeks and if there’s no change then come in and we will evaluate it,” Marshall said. By: Erica Coghill • Posted: March 25, 2021 The COVID-19 vaccine is causing swollen lymph nodes in many, but the harmless side effect is causing alarm as some mistake the temporary underarm lump for a tumor. o Tiredness, headache, muscle pain, joint pain, nausea, vomiting, diarrhea, chills or fever (acetaminophen or ibuprofen may help with pain and fever). This particular side effect of the COVID-19 vaccines is a normal reaction. Breast-imaging radiologists have noticed that underarm lymph nodes can be larger than usual after getting a COVID-19 vaccine, on the same side where the vaccine was administered. The vaccines can also cause tiredness, headache, muscle pain, chills, fever, and nausea. Many people will have some kind of reaction at the injection site, Bhardwaj said, like tenderness, redness, itching and swelling, and possibly tingling. It's this immune response to the vaccine that causes a reaction and lymph nodes to swell. There’s a potential side effect with the Covid-19 vaccine, and it’s the pits. Figure 2: A 63-year-old multiple myeloma patient, with skeletal pain. The one thing that we know about the COVID-19 vaccine is that it's highly effective in promoting an immune response. Some who receive the COVID-19 vaccine experience swollen lymph nodes. The Janseen (Johnson & Johnson) vaccine is a one dose vaccine. Lower back pain is usually associated with pneumonia or poor lung function and since COVID-19 is a respiratory virus, it makes sense that patients are … As a physician, I knew the possible side-effects of the new Moderna COVID-19 vaccine: fever, muscle pain, local redness, local swelling and axillary (arm pit) lymph nodes… Swelling of your fact and throat. What You Need To Know. These antibodies then help fight an infection if the virus, which causes COVID-19, later enters the body. There have been recent reports of women finding big, painful lumps under the arm after receiving their COVID-19 shots. Flu vaccines are less effective than the COVID vaccines, but they can protect you from more severe flu illness and hospitalization. Smetherman says that enlarged lymph nodes occur in 11 to 12% of all people after the first dose of the COVID-19 vaccine. After another day the discomfort went down substantially, and by yesterday Saturday (5 days post injection) it was feeling mostly normal. 3 It is rare to have serious side effects after getting the vaccine. In others, death occurs within the span of a couple of weeks. Lower back pain is usually associated with pneumonia or poor lung function and since COVID-19 is a respiratory virus, it makes sense that patients are … the vaccine was given, tiredness, headache, muscle pain, chills, joint pain and fever. ... ," as a side effect of the Moderna vaccine, and swollen lymph nodes is also listed under ... muscle pain … Apparently, swollen lymph nodes are a common response by the body. Case presentation . Swollen lymph nodes, according to experts, usually occur as a … These side effects are common a day or two after getting the COVID-19 vaccine and mean the vaccine is working. As of February 6, 2021, about 28.9 million people in the United States had received one or more vaccine doses. Also Read - COVID Vaccine Side Effects: Here’s Why Some People Suffer Severe Side Effects After Taking COVID-19 Vaccines. Swollen lymph nodes are a known side effect of the vaccine … Swollen lymph nodes can be a side effect of the COVID-19 vaccine and other types of vaccines, infectious disease expert Amesh A. Adalja, MD, … (1-3). Swollen lymph nodes are a common and harmless reaction to many vaccines, including vaccination for COVID-19. The most common reported side effects for the COVID-19 vaccine are similar to those reported in other vaccines in general, including pain in the injection site, fatigue, headaches, fever, chills, and muscle and joint pains. “The whole point of the vaccine is to … A COVID-19 vaccine could cause a false positive on a mammogram test, as it can cause lymph nodes to temporarily enlarge, according to an article by John Hopkins Medicine. Fever or muscle pain after a COVID-19 vaccine injection means the shot is working, experts say . They list some of the most common symptoms, including pain and swelling at the injection site and fever, chills, tiredness, and headaches. ... doctors are seeing an influx of women making mammogram appointments after noticing swollen lymph nodes in … “Swollen lymph nodes can be a response to many different vaccines, including the COVID vaccine… "Pain in the night and a little red," said Velasco, a San Francisco resident. the pain and swelling in the lymph nodes went away quickly, a few days. She knew a possible side effect was enlarged lymph nodes. But after COVID-19 vaccines began to roll out, and healthcare workers and older women (the ones at greatest risk of breast cancer) began to pour in for mammograms, Milch started recommending callbacks five to seven times per day.In most cases, they were for “adenopathy” — lymph nodes that seemed unusually enlarged. The pain … Common side effects after COVID-19 Vaccine AstraZeneca include: pain, swelling, tenderness, redness or itching at the injection site tiredness headache muscle pain nausea chills fever feeling unwell joint pain. Although swollen lymph nodes can be a sign of cancer, ... with radiologists suggesting that patients should be notified via letter that "enlarged lymph nodes are common after the COVID-19 vaccine," and that the lymph nodes on the side where patients received the vaccine will appear larger. This may worry you if you have had lymph nodes removed under your arm. As you may have heard, the COVID vaccines can cause side effects including pain, redness, and swelling at the site of injection and in that arm’s lymph nodes. Shutterstock. Both the Pfizer-BioNTech and the Moderna COVID-19 vaccines are mRNA vaccines. The SBI cites data that found 11.6% of patients who received the Moderna COVID-19 vaccine had swelling or tenderness after receiving their second shot … Actually, it’s in the pits, the armpits. I had the diagnosis of hodgkins lymphoma so i'm not too sure March 23, 2021, 7:47 AM. (And even if you’re pain-free, the swollen lymph … Some people experience swollen lymph nodes at the injection site, which may be mistaken for various forms of cancer. COVID Vaccine Side Effect of Swollen Lymph Nodes Can Be Mistaken for Cancer. This means they use mRNA to teach the body’s cells how to make a protein which will cause your body to have an immune response and make antibodies. Swollen lymph nodes after Covid vaccine or clogged duct? As mass vaccination against COVID-19 continues across the globe, oncologists have allayed fears over a recent side effect of the vaccine that resembles symptoms of breast cancer. The COVID-19 vaccines are even more powerful. Pain at the injection site was the most frequent and severe reported solicited local reaction among vaccine recipients. Aubrey Lewis, a nurse at University Hospitals in Cleveland, told ABC News she initially had no side effects to the Moderna vaccine, but after a few days found swelling in one of her lymph nodes.