COVID-19 vaccine, Influenza FAQ

Share to:
Can I Get the Fifth COVID Vaccine After Lymph Node Swelling?

COVID-19 vaccine After receiving the fourth dose of the BA.1/2 COVID-19 vaccine, I experienced swelling and pain in my armpit for about a week before returning to normal. Upon researching, I found that the side effect of the vaccine could be lymphadenopathy. I would like to ask t...


Dr. Yang Zongyan Reply:
After receiving the fourth dose of the BA.1/2 COVID-19 vaccine, I experienced swelling and pain in the armpit of the vaccinated arm, which returned to normal after about a week. Upon checking, I found that the side effect of the vaccine could be lymphadenopathy. I would like to a...

[Read More] Can I Get the Fifth COVID Vaccine After Lymph Node Swelling?


Can I Get the Fifth COVID Vaccine After Lymph Node Swelling?

COVID-19 vaccine After receiving the fourth dose of the BA.1/2 COVID-19 vaccine, I experienced swelling and pain in my armpit, which returned to normal after about a week. Upon researching, I found that the side effect of the vaccine could be lymphadenopathy. I would like to ask ...


Dr. Yang Zongyan Reply:
After receiving the fourth dose of the BA.1/2 COVID-19 vaccine, I experienced swelling and pain in the armpit of the vaccinated arm, which returned to normal after about a week. Upon checking, I found that the side effect of the vaccine could be lymphadenopathy. I would like to a...

[Read More] Can I Get the Fifth COVID Vaccine After Lymph Node Swelling?


Does Mixing COVID-19 Vaccines Affect Side Effects? Insights on Moderna Boosters

The occurrence of side effects from mixed COVID-19 vaccinations may be related to the types of vaccines received in previous doses? Hello Dr. Yang: I am planning to schedule an appointment for the fourth dose of the Moderna next-generation vaccine. I have heard that some friends ...


Dr. Yang Zongyan Reply:
The occurrence of side effects after each dose of the COVID-19 vaccine is not related to the type of vaccine received in previous doses. Currently, the Central Epidemic Command Center permits mixed vaccination.

[Read More] Does Mixing COVID-19 Vaccines Affect Side Effects? Insights on Moderna Boosters


COVID-19 Recovery: Vaccine Guidance for Immunocompromised Patients

What are the questions regarding vaccination after being diagnosed with COVID-19? Hello Dr. Yang, My mother was recently diagnosed with COVID-19 and is currently recovering. However, she has a history of taking corticosteroids, which places her in a group with compromised immuni...


Dr. Yang Zongyan Reply:
Immunocompromised patients are a group that particularly needs to receive the COVID-19 vaccine. It is recommended to complete the vaccination according to the guidelines provided by the Centers for Disease Control. Additionally, it is still advised for patients who have recovered...

[Read More] COVID-19 Recovery: Vaccine Guidance for Immunocompromised Patients


Are Vaccine Side Effects Likely to Occur Three Months Later?

Is it likely for vaccine side effects to occur three months later? Hello Doctor, after receiving my first dose of the BNT COVID-19 vaccine, I have been experiencing some stiffness in my arm and finger joints. These sensations started three months after the vaccination. I would li...


Dr. Yang Zongyan Reply:
The likelihood that this side effect is caused by the vaccine is low, but it is still recommended to seek medical attention for evaluation by a physician.

[Read More] Are Vaccine Side Effects Likely to Occur Three Months Later?


Understanding the Meaning of Non-Fully Vaccinated in COVID-19 Context

The term "Non-Fully Vaccinated" refers to individuals who have not completed the full vaccination schedule Hello Doctor, in the context of COVID-19 vaccination, when referring to the BNT vaccine, "Fully Vaccinated" means having received "2 doses or more.&...


Dr. Chen Mingong Reply:
Hello: fully vaccinated means two weeks after you receive the second dose of an mRNA COVID-19 vaccine, which is 14 days after completing both doses.

[Read More] Understanding the Meaning of Non-Fully Vaccinated in COVID-19 Context


Understanding the Meaning of Non-Fully Vaccinated for COVID-19 Vaccines

The term "incomplete vaccination" in the context of COVID-19 vaccines refers to individuals who have not received the full series of doses required for optimal immunity. This typically means that they have not completed the primary vaccination series, which may include ...


Dr. Yang Zongyan Reply:
According to the regulations of the Taiwan Centers for Disease Control, a complete vaccination is defined as receiving the recommended number of vaccine doses. Conversely, failing to receive the recommended doses is considered incomplete vaccination.

[Read More] Understanding the Meaning of Non-Fully Vaccinated for COVID-19 Vaccines


Understanding Vaccine Efficacy and Long COVID Concerns for Teens

Regarding vaccine efficacy? Hello Doctor, I am a senior high school student. I would like to ask: 1) Is the likelihood of experiencing long COVID symptoms after contracting COVID-19 high, meaning that they may never fully resolve? 2) I received my first dose of the BNT vaccine la...


Dr. Yang Zongyan Reply:
1) Is the rate of long COVID symptoms that may never improve high? Regarding long COVID symptoms, since there is currently no long-term data, whether it lasts a lifetime still depends on future studies, as the pandemic has only been ongoing for a few years. 2) I received my firs...

[Read More] Understanding Vaccine Efficacy and Long COVID Concerns for Teens


Does COVID-19 Vaccine Effectiveness Against Severe Cases Diminish Over Time?

What is the issue of COVID-19 vaccines in preventing severe cases? Hello Doctor: It is known that the protective antibodies from vaccines diminish over time. Does this mean that the protection against severe illness also decreases or disappears over time?


Dr. Chen Mingong Reply:
Hello: The number of antibodies decreases, which reduces the ability to prevent infection; however, the human body still has other immune cells (T cells) that provide protection. These remaining functions help protect individuals from severe illness or hospitalization. Therefore,...

[Read More] Does COVID-19 Vaccine Effectiveness Against Severe Cases Diminish Over Time?


Does Immunomodulatory Medication Increase Severe COVID-19 Risk?

Does taking immunomodulatory drugs increase the risk of developing moderate to severe symptoms after contracting COVID-19? Hello Doctor, I am 19 years old and a patient with ankylosing spondylitis. I am currently taking Salazopyrin, which is an immunomodulatory medication. I have...


Dr. Yang Zongyan Reply:
The American College of Rheumatology (ACR) acknowledges that there may be a theoretical risk of exacerbating pre-existing rheumatic diseases after receiving the COVID-19 vaccine. However, weighing the risks and benefits, they still recommend COVID-19 vaccination for patients with...

[Read More] Does Immunomodulatory Medication Increase Severe COVID-19 Risk?


Managing Breathing Difficulties and Chest Pain After Flu Vaccine

As the second dose of the vaccine is administered? On November 25th, I received the second dose of the vaccine, and starting from noon on November 26th, I began experiencing symptoms of shortness of breath and chest pain. I would like to know how to handle this situation.


Dr. Pan Fengjuan Reply:
Hello, you mentioned that "As" and "ax" are not currently types of COVID-19 vaccines available in the country! If you are referring to "AZ," here is the information: The side effects of the second dose of the AZ vaccine are generally milder compared ...

[Read More] Managing Breathing Difficulties and Chest Pain After Flu Vaccine


Managing Post-Vaccine Arm Reactions: What to Do After BNT Shot

BNT COVID-19 vaccine arm Hello, I received the BNT vaccine 10 days ago, and the injection site is still red and swollen. It was painful for the first three days, but currently, there are no other symptoms aside from the redness and swelling. What should I do?


Dr. Pan Fengjuan Reply:
After receiving the COVID-19 vaccine, the body generates an immune response, which can lead to localized or systemic inflammatory reactions. Commonly, this includes pain and swelling at the injection site, which is usually mild and resolves within a few days. To alleviate redness...

[Read More] Managing Post-Vaccine Arm Reactions: What to Do After BNT Shot


Understanding Coughing and Clear Mucus After COVID-19 Vaccination

COVID-19 vaccine Why is it that sometimes when I wake up before getting the COVID-19 vaccine, I cough and bring up a clear substance without any phlegm? After receiving the COVID-19 vaccine, I still occasionally experience this dry cough with the same clear substance. My family t...


Dr. Pan Fengjuan Reply:
Hello: First, you sometimes experience a cough with clear, non-productive sputum, which has persisted even after receiving the COVID-19 vaccine. For these upper respiratory symptoms, it is recommended that you visit an otolaryngologist for a thorough examination by a specialist. ...

[Read More] Understanding Coughing and Clear Mucus After COVID-19 Vaccination


Can You Get the COVID Vaccine if You're Allergic to NSAIDs?

Is it safe to get vaccinated if I am allergic to NSAIDs? Is it safe to receive the COVID-19 vaccine if I am allergic to NSAIDs?


Dr. Chen Mingong Reply:
Hello Mr. Li! Yes, you can get vaccinated. After receiving the vaccine, please stay at the vaccination site for 20 to 30 minutes for observation before leaving.

[Read More] Can You Get the COVID Vaccine if You're Allergic to NSAIDs?