Can Thyroid Cancer Survivors Safely Receive COVID-19 Vaccines? - Oncology

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Papillary thyroid carcinoma, status post total thyroidectomy, currently on thyroid hormone replacement therapy?


I would like to inquire whether it is safe for someone with papillary thyroid carcinoma who has undergone total thyroidectomy and received radioactive iodine treatment, and is currently on thyroid hormone replacement therapy with normal blood test values, to receive the COVID-19 vaccine.
Will there be any impact?

Ye Peixuan, 20~29 year old female. Ask Date: 2021/06/03

Dr. Chen Sirong reply Oncology


Pei-Hsuan Yeh / 24 years old / Female
Hello, cancer itself does not affect the administration of vaccines, especially since your disease has already been treated.
However, different vaccines have varying side effects, and these side effects can be influenced by age and gender.
Before receiving the AZ vaccine, it is advisable to discuss and assess the associated risks with your doctor.
Additionally, the use of contraceptives and hormone therapy are risk factors for thrombosis; therefore, individuals in these categories are recommended to discontinue these medications for at least 28 days prior to vaccination.
It is also important to be aware of the expiration date of your major illness card, as it may affect the order of vaccination.
Wishing you peace and health.

Reply Date: 2021/06/03

More Info


Thyroid cancer survivors, particularly those who have undergone total thyroidectomy and radioactive iodine treatment, can generally receive COVID-19 vaccines safely. Your situation, as described, indicates that you have been treated for papillary thyroid carcinoma, are on thyroid hormone replacement therapy, and have stable blood test results. This is a positive indicator of your overall health and suggests that your body is managing well post-treatment.

The primary concern for cancer survivors regarding vaccination is their immune system's ability to respond effectively to vaccines. In your case, since you are on thyroid hormone replacement and your thyroid function tests are normal, your immune system should be functioning adequately. The COVID-19 vaccines have been shown to be safe and effective for individuals with a history of cancer, including those who have been treated for thyroid cancer.
It is important to note that while the cancer itself does not pose a direct contraindication to vaccination, the type of treatment received and any ongoing health issues should be considered. For instance, if you were undergoing active treatment or had significant comorbidities, this might alter the risk-benefit analysis regarding vaccination. However, since you are in a stable condition and under regular follow-up, the benefits of vaccination far outweigh the risks.

In terms of potential side effects, the COVID-19 vaccines can cause mild to moderate reactions, such as soreness at the injection site, fatigue, headache, and mild fever. These side effects are generally short-lived and resolve within a few days. There is no evidence to suggest that receiving the vaccine would interfere with your thyroid hormone therapy or exacerbate any underlying conditions related to your previous cancer treatment.

It is also worth mentioning that individuals with a history of cancer may have a slightly altered immune response to vaccines, which is why booster doses may be recommended in some cases. Staying updated with your healthcare provider regarding any additional doses or specific recommendations based on your health status is advisable.

In conclusion, as a thyroid cancer survivor who has undergone appropriate treatment and is currently stable, you should be able to receive the COVID-19 vaccine without significant concerns. It is always best to discuss your specific situation with your healthcare provider, who can provide personalized advice based on your medical history and current health status. Vaccination is a crucial step in protecting yourself against severe illness from COVID-19, especially considering the ongoing pandemic.

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