AstraZeneca vaccine, Family Medicine FAQ

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Can Novavax Vaccine Be Safe for Patients with Hepatitis B?

Novavax vaccine Hello doctor, I have hepatitis B and have been hesitant to get vaccinated due to concerns about myocarditis or other symptoms. I have the following questions: 1. Can I receive the Novavax vaccine as my first dose? 2. Will the side effects from the first dose be si...


Dr. Lin Zhebin Reply:
Hello: Your condition of having hepatitis B is not particularly related to the occurrence of myocarditis after vaccination. Although both the Novavax vaccine and the Medigen vaccine are protein subunit vaccines, there is currently data indicating reports of rare adverse events su...

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Can I Mix COVID Vaccines After Allergic Reaction to Contrast Dye?

COVID-19 vaccine I received my first and second doses of the AstraZeneca vaccine, and I am now preparing to get my third dose. I previously experienced redness and itching after receiving a contrast agent during a CT scan, but I managed it by drinking water without taking any med...


Dr. Lin Zhebin Reply:
Hello: Since you experience redness and itching after receiving the contrast agent, there is a suspicion that you may have an allergic reaction to it. Currently, it is suspected that an allergy to the contrast agent may increase the risk of allergic reactions to mRNA vaccines (Mo...

[Read More] Can I Mix COVID Vaccines After Allergic Reaction to Contrast Dye?


Understanding Bruising After AZ Vaccine: When to Seek Medical Advice

Bruising on the thigh one week after receiving the AZ vaccine? Hello doctor, I received my first dose of the AstraZeneca vaccine on September 9th, and today I suddenly noticed a bruise on the left side of my left thigh. There are no red spots of bleeding, but it is quite painful ...


Dr. Ye Qianyu Reply:
Hello, after a thrombosis occurs, the symptoms vary depending on the location. For instance, if it occurs in the cerebral vessels, it can cause symptoms such as blurred vision and headaches. If it occurs in the lower limbs, there may be unilateral swelling and pain. If it occurs ...

[Read More] Understanding Bruising After AZ Vaccine: When to Seek Medical Advice


Does Masturbation After AZ Vaccine Affect Immunity or Side Effects?

Questions about receiving the AZ vaccine? Hello doctor, I am a 20-year-old male. I received the AZ vaccine on September 14th at around 4 PM, and it has now been 14 hours since then. However, being young and vigorous, I did not control my desires. About 13 hours later (around 6 AM...


Dr. Xiao Yongxun Reply:
Dear Mr. W: 1. After receiving the AstraZeneca vaccine, common reactions include pain and swelling at the injection site, which usually resolve within a few days. You may apply ice to the area, but please do not rub or scratch the injection site. 2. Fever (≥38°C) may occur afte...

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Is It Safe for Seniors with Head Issues to Get the Second AZ Vaccine?

Issues with the administration of the second dose of the AZ vaccine? Hello. My elder family member has an appointment to receive the second dose of the AstraZeneca vaccine tomorrow. They had a head injury from a car accident in their younger years and have been experiencing occas...


Dr. Xiao Yongxun Reply:
Dear Ms. Cheng: 1. According to the data published by our Centers for Disease Control, the contraindications for the AstraZeneca COVID-19 vaccine include a history of severe allergic reactions to vaccine components, previous severe allergic reactions after receiving this vaccine...

[Read More] Is It Safe for Seniors with Head Issues to Get the Second AZ Vaccine?


Persistent Elevated Body Temperature After COVID-19 Vaccination: What to Know

Elevated body temperature? Hello Doctor, I received the AZ vaccine a month ago, and it has been over 5 weeks now. My daytime temperature (ear temperature) is around 37.1 degrees Celsius, and during the warmer hours from noon to afternoon, it can reach 37.3 degrees. When I exercis...


Dr. Xiao Yongxun Reply:
Dear Ms. Lai, 1. The reactions that may occur after receiving the AstraZeneca vaccine are mostly pain and swelling at the injection site, which typically resolve within a few days. You may apply a cold compress, but please do not rub or scratch the injection site. Fever (≥38°C) ...

[Read More] Persistent Elevated Body Temperature After COVID-19 Vaccination: What to Know


Understanding Bruising After AZ Vaccine in Patients with Favism

Bruising at the injection site after receiving the AZ vaccine? Hello, Doctor: I have G6PD deficiency and received the AstraZeneca COVID-19 vaccine on September 9th. On the same day, I consulted with the physician at the vaccination site, who indicated that patients with G6PD defi...


Dr. Liao Yaopan Reply:
Hello, G6PD deficiency is not a contraindication for receiving the COVID-19 vaccine. Local redness or bruising is a relatively common reaction that typically subsides after a few days. You may continue to monitor the situation. If there is no improvement or if other symptoms aris...

[Read More] Understanding Bruising After AZ Vaccine in Patients with Favism


Post-AZ Vaccine: Understanding Leg Discomfort and When to Seek Help

Three days after receiving the AZ vaccine, I experienced soreness in my lower body? I would like to ask the doctor: My wife (female, 37 years old) received her first dose of the AstraZeneca vaccine on September 3 at 9:30 AM. After experiencing headache and fever as side effects f...


Dr. Liao Yaopan Reply:
Hello, if you still feel unwell, it is advisable to seek medical attention and have your family physician evaluate your condition. Online consultations are not equivalent to in-person visits and cannot provide diagnoses or treatment recommendations. Changhua Hospital cares about ...

[Read More] Post-AZ Vaccine: Understanding Leg Discomfort and When to Seek Help


COVID-19 Vaccine Concerns for Women in Menopause: A Guide

Questions related to COVID-19 vaccines? Hello, I am 52 years old. Last April, I visited a gynecologist and blood tests indicated that I have entered menopause. Since then, I have experienced menopausal symptoms such as insomnia, night sweats, anxiety, and palpitations, which have...


Dr. Xiao Yongxun Reply:
Dear Ms. K: 1. The AstraZeneca COVID-19 vaccine is a non-replicating viral vector vaccine containing the gene for the SARS-CoV-2 spike protein (S protein) and is used for the prevention of COVID-19. This vaccine has received emergency use authorization from the WHO, the EU, and ...

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Understanding Vaccine-Related Fainting: Causes and What to Do Next

Vaccine injection/syncope Hello Dr. Hsiao, my husband received his first dose of the AZ vaccine yesterday, August 4th, at 9:35 AM. After the vaccination, he stayed at the hospital for 20 minutes and then rode his motorcycle home (a 5-minute ride). Once home, he started drinking w...


Dr. Xiao Yongxun Reply:
Dear Ms. Lee: 1. Syncope refers to a transient loss of consciousness and inability to maintain posture due to insufficient cerebral blood perfusion. Its characteristic feature is a rapid recovery of consciousness without the need for treatment. Syncope is a symptom, not a diseas...

[Read More] Understanding Vaccine-Related Fainting: Causes and What to Do Next


Is It Normal to Have a Slight Fever After AZ Vaccine?

After receiving the AZ vaccine, the body temperature may be elevated? Hello, doctor. I would like to ask, I received the AstraZeneca vaccine a week ago, and my current body temperature fluctuates between 37.2 and 37.8 degrees Celsius (my usual temperature is between 35.8 and 36.5...


Dr. Xiao Yongxun Reply:
Dear Ms. Yu: 1. The AstraZeneca COVID-19 vaccine is a non-replicating viral vector vaccine that contains the gene for the SARS-CoV-2 spike protein (S protein) delivered via an adenovirus vector. 2. Possible reactions after vaccination primarily include pain and swelling at the ...

[Read More] Is It Normal to Have a Slight Fever After AZ Vaccine?