Get Virtual Care
For Businesses
About Us
A member asked:
How can any vaccine protect someone for life? don't antibodies eventually leave the body? why do some last and others dont?
A doctor has provided 1 answer
Immunologiic memory : Antibody levels do decrease over time, but prolonged immunity is provided by immunologic memory cells. On future exposure to an antigen (infection) they greatly shorten the effective response time giving long lasting protection (immunity). The duration and effectiveness of this immunologic memory varies with the particular agent, but pertussis shows it may not be as long as previously believed.
Answered 12/1/2019
5.6k views
Related Questions
A member asked:
How does getting tetanus vaccine protect you after exposure. Isnt it like other vaccines that are given prior to exposure to allow body to build anti bodies before exposure?
2 doctors weighed in across 2 answers
A member asked:
Why can't live vaccines be given at the same time? Or can they? Is it because they will create too many antibodies in your body?
2 doctors weighed in across 2 answers
A member asked:
If antibodies are not detected 6 months after Moderna vaccine is there still protection?
4 doctors weighed in across 3 answers
A member asked:
Very low pneumococcal anti-bodies. All other tests great. Is that serious? Given vaccine for it. What happens if my body doesn't make the antibodies?
A doctor has provided 1 answer
A member asked:
I have concerns that the Moderna vaccine doesnt protect against the South African variant compared to Pfizer. Is there a way to test the antibodies?
A doctor has provided 1 answer
People also searched for:
I had the Johnson & Johnson vaccine last July. When do the antibodies start to wane or completely leave?
If antibodies are low after a couple of months after receiving a COVID-19 vaccine will your body produce more antibodies to protect against infection?
COVID-19 antibodies develop in body after COVID-19 infection and also after taking COVID-19 vaccine. Which one of these two antibodies last longer in the body?
I've always been told by my Dr. that it takes about 2 weeks after a flu shot for your body to make antibodies to protect you against the flu. How long does it take for the upcoming Covid vaccines to work and provide immunity/protection from Covid?
My just told me that I am positive for hep c antibodies. waiting for the RNA. I am a healthcare worker but I dont recall having any needle sticks or body fluid on me in the last 8 years. I do have a tattoo from 18 years ago. All liver tests normal. ?
Didn't find what you're looking for?
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your questionMore of what we treat
Download HealthTap
Video visit and message your doctor
