Can People with High IgE Levels Get the Covid-19 Vaccine Safely? - Internal Medicine

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If the IgE levels in a blood test are elevated, is it safe to receive the Covid-19 vaccine?


If a person has a history of allergic conditions, frequently experiences eczema, and has elevated IgE levels in blood tests, can they receive the COVID-19 vaccine? Will the side effects be greater than those experienced by the general population?

Niming E, 30~39 year old female. Ask Date: 2021/05/25

Dr. Gao Jiankai reply Internal Medicine


Hello, thank you for your message.
I believe that getting vaccinated is a good option, and the likelihood of experiencing side effects is not higher than that of others.
Although your IgE allergy levels are elevated, the literature does not suggest that patients with such conditions are at greater risk for side effects from treatments or vaccines, so there is no need for you to worry.
The Allergy, Immunology, and Rheumatology Department of Changhua Hospital, Ministry of Health and Welfare, cares about you.

Reply Date: 2021/05/25

More Info


Individuals with high IgE levels, particularly those with a history of allergic conditions such as eczema, often express concerns about the safety of receiving the COVID-19 vaccine. However, current medical literature and expert opinions suggest that these individuals can safely receive the vaccine without a significantly increased risk of adverse effects compared to the general population.

IgE is an antibody that plays a crucial role in allergic reactions. Elevated IgE levels are commonly associated with conditions like asthma, allergic rhinitis, and eczema. While it is understandable for individuals with a history of allergies to be cautious about vaccinations, research has shown that the incidence of severe allergic reactions to COVID-19 vaccines is relatively low. The Centers for Disease Control and Prevention (CDC) and other health organizations have indicated that individuals with a history of allergies, including those with elevated IgE levels, can receive the COVID-19 vaccine.

It is important to note that the vaccines authorized for emergency use, such as the mRNA vaccines (Pfizer-BioNTech and Moderna) and viral vector vaccines (Johnson & Johnson), have undergone rigorous testing to ensure their safety and efficacy. The most common side effects reported are mild to moderate and include pain at the injection site, fatigue, headache, muscle pain, chills, fever, and nausea. These side effects are generally short-lived and resolve within a few days.

For individuals with a history of severe allergic reactions (anaphylaxis) to any component of the vaccine, it is advised to consult with a healthcare provider before vaccination. In such cases, vaccination may still be possible under medical supervision, where appropriate precautions can be taken.

Regarding the concern about whether individuals with high IgE levels may experience more severe side effects, studies have not shown a significant correlation between elevated IgE levels and increased vaccine-related adverse effects. The immune response to vaccines can vary among individuals, but the presence of high IgE alone does not appear to predispose someone to more severe reactions.

In summary, individuals with high IgE levels and a history of allergic conditions can receive the COVID-19 vaccine safely. It is crucial to monitor for any unusual reactions post-vaccination, but the likelihood of experiencing severe side effects is not significantly higher than that of the general population. If you have specific concerns or a history of severe allergies, it is always best to discuss these with your healthcare provider, who can provide personalized guidance based on your medical history and current health status.

In addition to vaccination, individuals with allergic conditions should continue to manage their allergies effectively, which may include avoiding known allergens, using prescribed medications, and maintaining regular follow-ups with their healthcare provider. This holistic approach will not only help in managing allergies but also contribute to overall health and well-being, especially during the ongoing pandemic.

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