AZ vaccine, Internal Medicine FAQ

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Low C3 Levels and Edema: Exploring Potential Causes and Next Steps

Edema examination shows low C3 levels? Stage I thyroid cancer, right thyroidectomy medication: OncoTect 50mg/day. Received one dose of the AZ vaccine, experienced adverse effects after a full meal, and has not been diagnosed since May due to lower limb edema. Consulted at the Int...


Dr. Gao Jiankai Reply:
Hello, thank you for your inquiry. There are no specific issues with immune function, and a decrease in C3 does not have particular significance. It is recommended to continue monitoring with the Metabolism Department. The Allergy, Immunology, and Rheumatology Department at Chang...

[Read More] Low C3 Levels and Edema: Exploring Potential Causes and Next Steps


Joint Stiffness and Pain After AZ Vaccine: What to Know

After receiving the AZ vaccine, I experienced joint stiffness and pain? Doctor: Hello, I received my first dose of the AstraZeneca vaccine on July 30, 2021; the second and third doses of Moderna on October 3, 2021, and March 14, 2022. I am approximately 50 years old. About 1 to 2...


Dr. Gao Jiankai Reply:
Hello, thank you for your inquiry. Here are my responses: 1. Currently, among your series of rheumatic disease test results, only the ESR is slightly elevated, and I recommend continuing to monitor it. After receiving this type of new vaccine, there is indeed a higher chance of...

[Read More] Joint Stiffness and Pain After AZ Vaccine: What to Know


Third COVID Vaccine Dose: Safety and Recommendations for Mixed Vaccination

Third dose of the COVID-19 vaccine? Hello: My mother is 73 years old. She received the first dose of the AZ vaccine and the second dose of the BNT vaccine. She is now looking to get the third dose, but the hospitals and clinics no longer have BNT available. Some doctors and resea...


Dr. Hong Yuanbin Reply:
Hello, based on some domestic and international studies, the third dose of Moderna is safe and provides strong protection. For individuals who received mixed vaccines for the first two doses, it is generally recommended to receive an mRNA vaccine for the third dose, either BNT (P...

[Read More] Third COVID Vaccine Dose: Safety and Recommendations for Mixed Vaccination


Post-Vaccine Concerns: Understanding Chest Pain After BNT Shot

Questions regarding post-vaccination issues? Hello, I received my second dose of the BNT vaccine on December 6th, and my first dose was the AZ vaccine in September. I experienced a fever after the first dose, but I didn't have any significant reactions after the second dose....


Dr. Hong Yuanbin Reply:
Hello, the chest pain you described due to a change in posture is not typically a symptom of myocarditis; it is usually caused by muscle or bone strain. If it were myocarditis, the chest pain would be persistent and accompanied by shortness of breath. It is advisable to monitor t...

[Read More] Post-Vaccine Concerns: Understanding Chest Pain After BNT Shot


Understanding Post-Vaccine Symptoms: Allergies, Dizziness, and More

Allergy / Dizziness / Lower back pain / Difficulty urinating Hello Doctor, I received the AZ vaccine at the beginning of August, and I did not experience significant side effects during the process. However, in mid-September, I developed an allergic reaction on my palms and the t...


Dr. Lin Wuxuan Reply:
Hello: Based on the symptoms you described, since your discomfort occurred at least 4-5 weeks after the vaccination, it is less likely to be a side effect of the COVID-19 vaccine. The symptoms that began in October are more likely related to a urinary tract infection, so it is re...

[Read More] Understanding Post-Vaccine Symptoms: Allergies, Dizziness, and More


Can Taking Fever Reducers Affect Vaccine Efficacy? A Patient's Concern

Took antipyretics? Hello doctor, last night I received the AZ vaccine and took a Tylenol beforehand. After taking a shower and doing some work, I went to bed around midnight. Suddenly, around 4 AM, I felt very cold and started shivering. Not long after, at 5 AM, I developed a fev...


Dr. Hong Yuanbin Reply:
Hello, some studies abroad have indeed shown that using antipyretics, such as acetaminophen (Tylenol), may slightly reduce the effectiveness of vaccines, but it does not render the vaccine ineffective. It is recommended that if you have a mild fever or are only slightly uncomfort...

[Read More] Can Taking Fever Reducers Affect Vaccine Efficacy? A Patient's Concern


Understanding Vaccine Side Effects: Is Your Discomfort Normal After AZ Shot?

Vaccine side effects Hello Doctor, this morning my family took me to get the AZ vaccine, and there happened to be some leftover doses. After noon, I suddenly felt very cold and then developed a fever. I took a pill and slept until around 5 PM, waking up sweating. My body temperat...


Dr. Hong Yuanbin Reply:
Hello, a low-grade fever and back pain are very common side effects of the AZ vaccine, so there is no need to worry unless the fever or pain becomes unbearable. In that case, you may consider taking acetaminophen. The vitamin supplements will not have any impact, so you can conti...

[Read More] Understanding Vaccine Side Effects: Is Your Discomfort Normal After AZ Shot?


Post-Vaccine Concerns: Understanding Blood Clots and Skin Changes

Post-vaccination issues? Hello doctor, I would like to ask about something. I just received my vaccine around 8 PM, and when I got home, I saw the information they sent back regarding possible symptoms, which mentioned blood clots. I happened to notice two dark spots on my calf, ...


Dr. Hong Yuanbin Reply:
Hello, based on the photos you provided, it appears to be a mole. The blood clots associated with the AZ vaccine refer to thrombosis within blood vessels, which commonly presents with symptoms such as headaches, dizziness, and chest pain, rather than skin lesions like black spots...

[Read More] Post-Vaccine Concerns: Understanding Blood Clots and Skin Changes


Understanding Hyperthyroidism: Symptoms, Diagnosis, and Treatment Options

Thyroid issues Hello Doctor, I received the AZ vaccine on August 5th, and about 10 days later, I experienced rapid heartbeat, chest tightness, and some shortness of breath until I sought medical attention on August 19th. My thyroid blood test results were as follows, while other ...


Dr. Lin Jianliang Reply:
Hello: Question 1: The distinction between mild and severe is quite subjective. Based on your values: FT4: 1.86 (reference range 0.59-1.43), it is not significantly above the upper limit. Question 2: Please follow your attending physician's advice; if the doctor has not inst...

[Read More] Understanding Hyperthyroidism: Symptoms, Diagnosis, and Treatment Options


Is Essential Thrombocythemia a Rare Disease? Understanding Its Classification and Vaccine Eligibility

Is essential (hemorrhagic) thrombocythemia a rare disease? Hello Doctor: I have been experiencing issues with elevated platelet counts since the end of 2015, and I am currently undergoing regular check-ups. I would like to ask: 1. Is the disease classification noted on the Nation...


Dr. Lin Jianliang Reply:
Hello Lin! This is a blood issue, and it is recommended to consult a hematologist for examination!

[Read More] Is Essential Thrombocythemia a Rare Disease? Understanding Its Classification and Vaccine Eligibility


Unexplained Bruising on Lower Legs After AZ Vaccine: What to Know

After receiving the AZ vaccine, there is unexplained bruising on the calf? Hello doctor, I have Sjögren's syndrome and iron deficiency anemia. After receiving my first dose of the AZ vaccine on July 29 (Thursday), I noticed seven unexplained bruises on my tibia and knee on J...


Dr. Zeng Guosen Reply:
Hello, the blood test did not show any abnormalities in your platelets. Blood abnormalities related to the AZ vaccine typically occur 10 days to two weeks after vaccination. Currently, your situation cannot be explained, and it is recommended that you consult a hematologist for f...

[Read More] Unexplained Bruising on Lower Legs After AZ Vaccine: What to Know


Post-AZ Vaccine: Mild Thigh Pain and Blood Circulation Concerns

Mild intermittent pain in the front of the left thigh three to four days after receiving the AZ vaccine? Hello, I received the AZ vaccine 3-4 days ago, and since last night, I've been experiencing intermittent pain in the front of my left thigh. The pain does not persist con...


Dr. Hong Yuanbin Reply:
Hello, based on your timeline and symptoms, it is likely that the foot pain is not caused by a thrombus related to the AZ vaccine. However, if the discomfort persists, you may consider consulting an orthopedic or neurology specialist to identify the underlying cause. Thank you fo...

[Read More] Post-AZ Vaccine: Mild Thigh Pain and Blood Circulation Concerns


Post-Accident Health Concerns: Vaccine Eligibility and Recovery Insights

Post-accident condition and vaccine issues? I would like to ask about the injuries I sustained from a car accident two years ago, which resulted in liver and spleen lacerations. I did not undergo invasive treatment, but I fractured five ribs and my sternum. Occasionally, I still ...


Dr. Hong Yuanbin Reply:
Hello, the process of healing at the fracture site and the wound around the knee may lead to fibrosis, which could result in the pulling sensation or pain you mentioned. Theoretically, this should gradually diminish. However, if the pain increases, it is advisable to consult your...

[Read More] Post-Accident Health Concerns: Vaccine Eligibility and Recovery Insights


Vaccination Concerns for Patients with Chronic Dermatitis

Vaccination inquiries? Hello Dr. Hong, I visited the dermatologist last week for a follow-up appointment. The doctor said I have chronic eczema and advised me to continue applying the medication. It seems to be improving as I no longer see any flakes. Last time, there was slight ...


Dr. Hong Yuanbin Reply:
Hello, based on your provided skin condition, whether it is psoriasis or another diagnosis, it will not affect the administration of vaccines. The choice of vaccine type should also not be impacted, and you can receive the vaccine. The quality of the AZ vaccine is certified by th...

[Read More] Vaccination Concerns for Patients with Chronic Dermatitis


Should Patients with Congenital Hypothyroidism Get the AZ Vaccine?

It is recommended to administer vaccines for individuals with congenital hypothyroidism? Hello, doctor. I have congenital hypothyroidism and have been on medication for control. My blood tests have consistently shown normal results. Aside from gastritis and slightly elevated body...


Dr. Lin Jianliang Reply:
Hello, online user: For patients with well-controlled hypothyroidism, if there are no contraindications or precautions regarding the administration of the AZ vaccine, it is recommended that they receive the vaccine.

[Read More] Should Patients with Congenital Hypothyroidism Get the AZ Vaccine?


Managing Health Issues: Can I Get the AZ Vaccine with My Conditions?

Health issues I woke up in the morning feeling very sore, so I lay back down thinking I could get up later. After a while, I felt uncomfortable again, with body aches, and I lay down for a bit before finally getting up. I have a history of allergic rhinitis, severe sleep apnea, a...


Dr. Hong Yuanbin Reply:
Hello, do you have any other symptoms? For example, fever, cough, shortness of breath, sore throat, etc.? If you do, it may be a sign of a cold or another illness. If not, it could be due to irregular sleep patterns, high stress, or poor posture. These factors should not affect y...

[Read More] Managing Health Issues: Can I Get the AZ Vaccine with My Conditions?


Is It Safe for Patients with Vasculitis to Get the AZ Vaccine?

Is it suitable for individuals with vasculitis to receive the AZ vaccine? Individuals with a history of vasculitis, which is an autoimmune disease, may have concerns regarding vaccination. Among those advised against receiving the AstraZeneca (AZ) vaccine are individuals with com...


Dr. Gao Jiankai Reply:
Hello, thank you for your message. Currently, the Taiwan Society of Rheumatology has reached a consensus and provided recommendations for patients with autoimmune diseases. Of course, these recommendations will continue to be adjusted over time as more evidence accumulates. In pr...

[Read More] Is It Safe for Patients with Vasculitis to Get the AZ Vaccine?


Concerns About AZ Vaccine for Allergy-Prone Patients and Elderly

AZ-related issues? Hello Dr. Hong, I would like to ask you two questions. 1. I am allergic to penicillin (I experienced rashes on my hands and feet, and swelling in my eyes and ears). I also have mild allergic reactions to some long-acting pain relief and anti-inflammatory medi...


Dr. Hong Yuanbin Reply:
Hello, 1. Allergy to penicillin is not a contraindication for the AZ vaccine, so it can be administered. 2. Your grandfather's underlying conditions are also not contraindications for the AZ vaccine, whether in Taiwan or abroad. Thank you for your inquiry.

[Read More] Concerns About AZ Vaccine for Allergy-Prone Patients and Elderly


Can a 92-Year-Old with Arrhythmia Safely Receive the AZ COVID Vaccine?

A 92-year-old patient with arrhythmia receiving the COVID-19 vaccine? Hello Dr. Hong: My father is scheduled to receive the AZ COVID-19 vaccine on June 16. He regularly takes antiarrhythmic medication, Rytmonorm, one tablet in the morning and one in the evening, which may be rela...


Dr. Hong Yuanbin Reply:
Hello, the antiarrhythmic medications you mentioned are not listed as contraindications for the AZ vaccine either domestically or internationally, nor have they been indicated as unsuitable for vaccination. Thank you for your inquiry.

[Read More] Can a 92-Year-Old with Arrhythmia Safely Receive the AZ COVID Vaccine?


Is It Safe to Get the AZ Vaccine with Mediterranean Anemia?

Questions about the administration of the AZ vaccine? Hello, doctor. I would like to ask if there are any risks associated with receiving inactivated vaccines like AstraZeneca if there is a family history of Mediterranean anemia (thalassemia) on the paternal side. Thank you.


Dr. Hong Yuanbin Reply:
Hello, Mediterranean anemia is currently not a contraindication for the AZ vaccine, and there is no evidence that it increases risk. Thank you for your inquiry.

[Read More] Is It Safe to Get the AZ Vaccine with Mediterranean Anemia?