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Hepatitis B and immunity
Male.38Yrs.186cms.90Kgs. I completed 3 dose hepatitis B vaccine last year. When immunity was checked after 1 year it was 5 mIU/ml. I remember 12 years back hepatitis B ,3 dose vaccine was taken and the immunity check at that time was also negative. Now I think there is something odd with my body. I have restarted the 3 dose vaccination again . Most probably the immunity test will come negative this time as well. What can be the reason ?.
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Your immune response is poor .
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A low or negative hepatitis B antibody level even after proper vaccination can happen in a small percentage of people and does not automatically mean something seriously “wrong” with your body. These individuals are called “non-responders” or “hypo-responders.”
Common reasons include:
* Genetics / individual immune response variation
* Obesity, smoking, alcohol use
* Diabetes or metabolic syndrome
* Increasing age
* Incorrect vaccine storage/administration previously
* Rarely underlying immune disorders
An anti-HBs level of
Next Steps
1. Complete the current vaccine course properly and then check:
* Anti-HBs titre 1–2 months after the final dose
(not after many months or a year)
2. Also check baseline hepatitis B status:
* HBsAg
* Anti-HBc total
* Anti-HBs
This helps rule out prior exposure/chronic infection.
3. If still non-responsive after two complete properly timed series, doctors may evaluate:
* CBC
* HbA1c
* Liver function tests
* Vitamin D/B12
* HIV test (routine in recurrent vaccine non-response evaluation)
* Immunoglobulin levels if clinically indicated
4. Some true non-responders benefit from:
* Higher-dose hepatitis B vaccine
* Alternative vaccine formulations
* Intradermal schedules in specialist settings
Health Tips
* The timing of antibody testing is extremely important — testing after a year may show low titres even in previously protected people.
* Some people lose measurable antibodies over time but still retain immune memory.
* However, since you failed response twice, proper evaluation is justified.
* Avoid assuming severe immune disease immediately — many otherwise healthy people are vaccine non-responders.
* Maintain good sleep, exercise, metabolic health, and avoid smoking if applicable, as these influence vaccine response.
A detailed online consultation with an infectious disease specialist or internal medicine physician can help determine whether you are a true hepatitis B vaccine non-responder and whether additional immune workup or alternative vaccination strategies are needed.
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As if you have a doubt that your immunity is declining..need to do thoroygh examination and investigation to rule out infection ..bre status too needed...if not then..it means you are healthy and out of illness..kindly consult a physician nearby with reports
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Hydrate yourself properly
Eat green leafy vegetables
Consult for further queries
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Its varies person to person ,, individual body response to immunity
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There is genetic variations in response to vaccines. Get yourself tested after finishing current vaccine. Prior Subclinical infections can also alter response.
If again antibody titre is low, discuss with your doctor.
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It is understandable to feel concerned when your lab results don't show the expected level of immunity after multiple vaccine series. However, what you are describing is a recognized clinical scenario.
A result of 5 mIU/mL is technically below the 'protective' threshold (usually >10 mIU/mL), which classifies you as a 'Non-Responder' to the standard Hepatitis B vaccine. Here are the most common reasons why this happens:
The 'Non-Responder' Phenomenon: About 5–10% of healthy individuals do not show a measurable antibody (anti-HBs) response to the standard surface antigen vaccine. This is often due to specific genetic variations in how the immune system recognizes this particular virus.
Waning Antibody Levels: Even if the vaccine worked 12 years ago, antibody levels naturally decline over time. However, your body may still have 'immune memory' (memory B cells) that could fight the virus if you were ever exposed, even if the blood test shows a low number.
Factors Affecting Response: Age (response decreases after 40), smoking, a high BMI, or certain chronic underlying conditions can sometimes hinder the body’s ability to produce these antibodies.
What to do next:
Since you have already restarted the 3-dose series, I recommend checking your levels again 1 to 2 months after the final dose. If you remain a non-responder:
Specialized Vaccines: Discuss with your doctor the possibility of using a different type of Hep B vaccine (such as the adjuvanted Heplisav-B), which is designed specifically to trigger a stronger response in non-responders.
Screening: Ensure you have been screened for chronic Hepatitis B (HBsAg) or C, as a pre-existing silent infection can sometimes prevent a response to the vaccine.
Don't be discouraged; for most non-responders, it is a matter of finding the right vaccine protocol rather than a general failure of the immune system.
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Please tell detailed history
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Please book online consultation on Practo for better consultation
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Some people are naturally low or non responders to the Hepatitis B vaccine despite being otherwise healthy, so this does not automatically mean something is seriously wrong with your body.
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Your reports do not necessarily mean that something is seriously wrong with your body. A small percentage of healthy people do not develop high detectable antibody levels even after vaccination, and this can happen due to genetic or immune-response variation. In many cases, repeating the vaccine series or using a different vaccine schedule helps improve immunity. Please do not panic — this condition is manageable and does not automatically mean you have a disease or weak immunity.
Next Steps
The important step is to first rule out active Hepatitis B infection with proper blood tests, which is usually straightforward.
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The situation you've described is a known clinical phenomenon where an individual is a 'Vaccine Non-responder'. Approximately 5-10% of healthy individuals do not develop a protective antibody titre (>10\text{ mIU/ml}) even after a standard 3-dose Hepatitis B vaccine series. Since your titre is 5 mIU/ml, it is below the protective threshold. This doesn't mean something is 'odd' with your body in a dangerous way, but rather that your immune system's specific pathway for the Hepatitis B surface antigen isn't getting activated effectively by the standard vaccine
Next Steps
Alternative Vaccination Strategy: "Sometimes, repeating the series with a Double Dose or using a different brand/type of vaccine (like a third-generation pre-S1/pre-S2 vaccine) can help trigger a response in non-responders."
Intradermal Route: "Discuss with your doctor about getting the vaccine through an Intradermal route instead of Intramuscular, as this can sometimes bypass the non-responsiveness."
Rule out Chronic Infection: "To be 100% sure, get an HBsAg (Surface Antigen) test done once to confirm you aren't already a chronic carrier, which would explain why the vaccine isn't producing antibodies
Health Tips
For a specialized vaccination protocol designed for non-responders and to review your complete medical history, please book a full consultation session via my Practo profile."
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Dr. Vetsa Sri Krishna Chaitanya
General Physician
7 yrs exp
Rajahmundry
Need a few more details please consult for further evaluation and treatment
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Dr. Ashita Kuruvilla
General Practitioner
8 yrs exp
Kolkata
Need few more details for further evaluation kindly consult
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Dr. Guru Scindia
General Physician
6 yrs exp
Thanjavur
-Your Anti-HBs level of 5 mIU/mL suggests inadequate antibody response after Hepatitis B vaccination
-Some individuals are natural low/non-responders despite being otherwise healthy
Next Steps
-Complete the repeat Hepatitis B vaccine series as advised
-Recheck Anti-HBs titre 1–2 months after the last dose
-Do HBsAg and Anti-HBc tests once to rule out past/current Hepatitis B infection
Health Tips
-Do not panic as this can occur even in healthy individuals
-Factors like obesity, smoking, diabetes, genetics, or vaccine-related issues can reduce response
-Maintain healthy lifestyle habits and regular follow up
-Contact me anytime on Practo for further consultation
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Dr. R S Disodia
General Physician
31 yrs exp
Gurgaon
Immunity usually remains for a year May very from manufacturers
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Dr. Gaurav Jaiswal
General Physician
7 yrs exp
Jhansi
Avoid fried and spicy food
Water intake more
Do connect and consult
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Dr. Suraj Sharma
General Practitioner
4 yrs exp
Jaipur
Do consult
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Dr. Ravi Kumar Nadella
General Physician
18 yrs exp
Hyderabad
Abnormal immune response
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Dr. Anuj Mothsra
General Practitioner
7 yrs exp
Jhunjhunu
Can help you, kindly consult and provide detailed history for proper diagnosis and further management
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