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Doctor insights on: How Does The Immune System Fight Smallpox

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If my mom had the smallpox vaccination before she got pregnant, am I immune?

If my mom had the smallpox vaccination before she got pregnant, am I immune?

Don't need to be: Smallpox has been eradicated worldwide so there is no longer any need for vaccination, and no you are not immune.

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Dr. Heidi Fowler
134 Doctors shared insights

Smallpox (Definition)

An infectious disease caused by viruses Variola Major and Variola Minor that was a significant cause of death before ...Read more


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If my parents had the smallpox vaccination, are they still immune 30-40 years later?

If my parents had the smallpox vaccination, are they still immune 30-40 years later?

Agree w Dr. Raff: A study called “Duration of antiviral immunity after smallpox vaccination.” Hammarlund E. etal (Nat Med 2003) showed that >90 % of volunteers vaccinated 25 to 75 years prior still had significant humoral / cellular immunity. ** http://www. Ncbi. Nlm. Nih. Gov/pubmed/12925846**

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How does the immune system fight malaria?

How does the immune system fight malaria?

Two stages: Natural Killer cells are the first immune step that seeks out the malaria to mark it for the body to "kill" it. A second step is the T cell that also seeks the genetic marker of the malaria to flag it for a "kill". Since malaria invades natural cells of the body it can begin to hide from the immune system and replicate. Consider vaccination if traveling in high risk areas with malaria.

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How does the immune system fight off germs?

How does the immune system fight off germs?

Heard to simplify.: Like a complicated orchestra plays a difficult score. Different germs produce different responses. There are is nonspecific and specific immune responses. Even the skin oils, saliva, stomach acid tears and sweat are important here. It is much to difficult to quickly answer which is why I taught a course taking 20 hours on the subject to medical students.

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Why does the immune system fight & heal physical illnesses but most likely not or never mental illnesses?

Why does the immune system fight & heal physical illnesses but most likely not or never mental illnesses?

Mental illness: This is a very good question and the answer has eluded the medical profession for a long time. Not all mental illness is based on a immune imbalance though and some is related to hormonal imbalances. The workings of the brain are still pretty mysterious. Stay tuned.

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How does the immune system fight cancer?

How does the immune system fight cancer?

Complicated: Natural killer cells can recognize tumor cells and virally infected cells and destroy those. T-cells and antibodies to markers on tumor cells may also destroy tumor cells. Unfortunately, most of the time, some cancer cells evade this destruction and continue the disease process. The hope and potential of immune therapy remains to be realized.

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How can the immune system fight off infection?

Immune system: It is a multi-pronged attack too big to describe here.....So follow this link. Http://www. Niaid. Nih. Gov/topics/immunesystem/pages/default. Aspx.

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What food help the immune system fight off an infection?

What food help the immune system fight off an infection?

Nothing specific...: There are no specific foods studied in the scientific literature that boost the immune system but eating a healthy diet in general is good for all aspects of health. A diet rich in fruits, veggies, whole grains, lean meats, and healthy fats will certainly make you feel good.

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If you don't get gastroenteritis for years does the immune system become less efficient at fighting it and thus causing severe symptoms when infected?

If you don't get gastroenteritis for years does the immune system become less efficient at fighting it and thus causing severe symptoms when infected?

Consider this...: Lots of things can cause GI distress to recur--incompletely treated infection (e.g. Giardia) or re-exposure with re-infection; maldigestion (pancreatic insufficiency) or malabsorption (celiac sprue); food intolerances with re-exposure to the offending substance (lactose, sorbitol, etc.), irritable bowel syndrome, missed diagnosis (incomplete evaluation), non-gi related problems (uti, pid, etc.).

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How can the immune system fight a viral infection?

How can the immune system fight a viral infection?

Several: When the body encounters a virus, it may mount multiple responses to it. This include the production of specific antibody, activation of the body's killer cells, production of mediators such as interferons- just to name a few.

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How does the immune system fights a viral infection step by step?

How does the immune system fights a viral infection step by step?

Immune defense: TheRe are textbooks written about this, this is not the right forum for your question.

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Is it possible that if a person become in contact with HIV through sex and the virus is at a low level, can the immune system fight it off?

Is it possible that if a person become in contact with HIV through sex and the virus is at a low level, can the immune system fight it off?

HIV: There is a rare subgroup of individuals who have an altered version of the viral attachment site for the cell. Generally this means that the infection progresses less rapidly, but prevention is conceivable. Transmission is never 100% and the lower the viral load the lower the risk of infection, but not because the immune system fights it off.

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What does the immune system do? If it fights infection, why does everyone still get the flu and the cold?

What does the immune system do? If it fights infection, why does everyone still get the flu and the cold?

What is the level of: General immunity for the person? Has the person developed antibodies to the specific viruses that they are being exposed to? Are person who is immunodeficient is more likely to become infected. Or if the person is exposed to a germ that is novel to them - they are more likely to be susceptible.

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How can our immune system fight anthrax?

How can our immune system fight anthrax?

Vaccination: A vaccine for anthrax was available a while ago and was given to military personnel. For microbial diseases, vaccination is the best way to support the immune system to fight the infection.

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Can there be some reason why your immune system wouldn't fight disease at all?

Can there be some reason why your immune system wouldn't fight disease at all?

There some!: Job's syndrome-high ige, deficiency of iga-gi disease, parasites. Complement deficiency: propensity to lupus, ra, and sjogren's. But most people who catch diseases easily are stressed and fatigued. The stress can be emotional of physical or both!

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Why are immunosuppressants good for some people if we need our immune system to fight off disease?

Why are immunosuppressants good for some people if we need our immune system to fight off disease?

Relative: Immuno-suppression is resorted to when there is a "hyperactive " immune state leading to an auto-immune disease or condition, or to allow the immune system to adapt to a transplanted tissue, that doesn't mean that the immune system is totally knocked out (in some states yes during bone marrow transplant) but can still fight certain infections, till total recovery, the immune system is complex

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If you have an asymptomatic illness, does that mean your immune system isn't fighting the illness off?

If you have an asymptomatic illness, does that mean your immune system isn't fighting the illness off?

Asymptomatic: If you have an illness that is asymptomatic then you should not feel the illness. Asymptomatic means no symptoms do it is hard to tell your sick. This would mean you immune system works.

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The other day it felt like my immune system was fighting off something. Is that even possible? I felt a little sick and tired.

Unlikely: But cannot disprove your feelings. It may be that you, in fact were coming down with a mild illness and that your system rejected it, but mild periods of abnormal sensations are not uncommon and may simply be a state of mind. As long as you are getting better you should be fine. Best wishes.