Is It Safe for Hashimoto's Thyroiditis Patients to Get the AZ COVID Vaccine? - Internal Medicine

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Hashimoto's thyroiditis


Is it suitable for patients with Hashimoto's thyroiditis to receive the AZ COVID-19 vaccine? Currently, there is no treatment, and blood tests are only conducted every six months to monitor values.

Miss Zhu, 30~39 year old female. Ask Date: 2021/06/09

Dr. Gao Jiankai reply Internal Medicine


Hello, thank you for your message.
Individuals with Hashimoto's thyroiditis can still receive the COVID-19 vaccine, so there is no need for concern.
This is a message from the Allergy, Immunology, and Rheumatology Department of Changhua Hospital, Ministry of Health and Welfare, expressing our care for you.

Reply Date: 2021/06/09

More Info


Hashimoto's thyroiditis is an autoimmune condition that affects the thyroid gland, leading to hypothyroidism in many cases. Patients with this condition often have concerns about receiving vaccinations, particularly the COVID-19 vaccines, due to their underlying health issues. However, based on current medical guidelines and expert opinions, individuals with Hashimoto's thyroiditis can safely receive the AstraZeneca (AZ) COVID-19 vaccine.

The primary concern for patients with autoimmune diseases is whether the vaccine could exacerbate their condition or lead to adverse effects. However, extensive studies and real-world data have shown that the COVID-19 vaccines, including the AZ vaccine, do not pose a higher risk for individuals with autoimmune disorders compared to the general population. In fact, vaccination is strongly encouraged for these patients, as they are at an increased risk for severe illness from COVID-19 due to their compromised immune systems.

It is important to note that the AZ vaccine works by prompting the immune system to recognize and respond to the SARS-CoV-2 virus, which causes COVID-19. This immune response is crucial for developing immunity against the virus. For patients with Hashimoto's thyroiditis, receiving the vaccine can help protect them from severe outcomes associated with COVID-19, such as hospitalization or death.

In terms of timing and medication management, patients with Hashimoto's thyroiditis should continue their regular thyroid hormone replacement therapy (if prescribed) and any other medications they are taking. There is no need to stop these medications before or after vaccination. It is advisable to maintain regular follow-ups with healthcare providers to monitor thyroid function and overall health.

Additionally, patients should be aware of potential side effects from the vaccine, which may include mild to moderate symptoms such as fatigue, headache, muscle pain, or fever. These symptoms are generally short-lived and indicate that the body is building an immune response. If any severe allergic reactions occur, such as anaphylaxis, it is crucial to seek immediate medical attention. However, such reactions are rare.

In conclusion, individuals with Hashimoto's thyroiditis are encouraged to receive the AZ COVID-19 vaccine. The benefits of vaccination, including protection against COVID-19 and its potential complications, far outweigh the risks. It is always best for patients to discuss any concerns with their healthcare provider, who can provide personalized advice based on their medical history and current health status. Vaccination not only protects the individual but also contributes to community immunity, helping to control the spread of the virus.

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