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Doctor insights on: Bacterial Infections Infectious Diseases

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Are bacterial infections contagious?

Are bacterial infections contagious?

Not the "infections": All bacteria are contagious, meaning that one person can smear some of his bacteria onto another's skin or other body part. The bacteria can then die, multiply on the surface (colonize the surface), or damage the person's cells and body parts (start an infection). No infection occurs in many cases, meaning the "infection" did not spread to the person even though the "bacteria" did spread to him. ...Read more

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Dr. Al Hegab
9 doctors shared insights

Infection (Definition)

Infections are invasions of some other organism (fungus, bacteria, parasite) or viruses into places where they do not belong. For instance, we have normal gut bacteria that live within us without causing problems; however, when those penetrate the bowel wall and enter the bloodstream, ...Read more


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Are bacterial infections contagious?

Are bacterial infections contagious?

Sometimes: Some bacterial infections are, like strep throat, or pink eye, but many develop that are not really contagious, like sinusitis, cellulitis, or diverticulitis. If you have a concern, you should discuss the specifics with your doctor. It is also always a good idea to always wash your hands or use hand sanitizer, whenever you are out, like shopping, airports, grocery stores etc to minimize risks. ...Read more

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Virus or bacterial infection?

Virus or bacterial infection?

Yes?: What is the question? Both viruses and bacteria and other types of organisms can produce infection. If you have a specific issue, write back. ...Read more

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Are chlamydial infections a genetic disease?

Are chlamydial infections a genetic disease?

No: Chlamydia is an infectious disease, not genetic. It's acquired by contact with other people who have it. ...Read more

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Are all bacterial infections contagious?

Are all bacterial infections contagious?

Not the "infections": All bacteria are contagious, meaning that one person can smear some of his bacteria onto another's skin or other body part. The bacteria can then die, multiply on the surface (colonize the surface), or damage the person's cells and body parts (start an infection). No infection occurs in many cases, meaning the "infection" did not spread to the person even though the "bacteria" did spread to him. ...Read more

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Could leukocytosis cause viral and bacterial infections?

Could leukocytosis cause viral and bacterial infections?

The other way around: Leukocytosis is an abnormally high number of white blood cells in the blood, as measured on a blood test. Both viral and bacterial infections can sometimes cause high numbers of white blood cells (wbc's) or low numbers of wbc's (leukopenia). Unusual leukocytosis, not caused by an infection, can be due to a bone marrow problem such as an early stage of leukemia. A doctor can further evaluate. ...Read more

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What's pneumococcal infection disease?

What's pneumococcal infection disease?

Mostly respiratory: Streptococcus pneumonae, the pneumococcus, is the classical cause of bacterial pneumonia in adults and the most common cause of bacterial meningitis in the adult. ...Read more

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What causes viral meningitis infection?

What causes viral meningitis infection?

Dozens of things: Influenza, parainfluenza, adenovirus, enterovirus, poliovirus, western equine encephalitis, eastern equin encehaplitis virus, st. Louis encephalitis virus, west nile virus, measles virus and varicella zoster virus just to name a few. ...Read more

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What causes bacterial infections?

Any contaminated: Bacteria is present everywhere and some are harmful. Some are transmitted from other people and others from having been in contact with a contaminated object, soil. Or water. The most worrisome type is MRSA often acquired from a hospital stay. ...Read more

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Is viral meningitis infectious?

Is viral meningitis infectious?

Very variable: There is a very large number of viruses that can cause meningitis, most are not infectious. See this site for more info. http://www.cdc.gov/meningitis/viral.html. ...Read more

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Can bacterial infection cause gallbladder disease?

Can bacterial infection cause gallbladder disease?

Gallstones: Gallstones are formed in the gallbladder and may not cause symptoms . Gallstones in the gallbladder are associated with bacteria in the bile and if the bile in the gallbladder gets infected it causes cholecystitis which makes you very unwell and requires surgery to remove the gallbladder. ...Read more

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Can bacterial infections cause cancer?

Can bacterial infections cause cancer?

Not directly: Several pathogenic bacteria known to establish persistent infections, can promote or initiate abnormal cell growth by evading the immune system and creating an environment that can result in cancer (chronic inflammation and production of carcinogenic bacterial metabolites). Helicobacter pylori is a species of bacteria that causes ulcers. If left untreated, this can lead to stomach cancer. ...Read more

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Can antibiotics cause secondary bacterial infections?

Can antibiotics cause secondary bacterial infections?

Complex answer: Antibiotics have a range of bacteria that they can kill; others outside that range are not so affected; some can become resistant to the antibiotic. If inappropriate ab is used, or taken wrong, e.g. Not as long as rx'd, can lead to more infection, with resistant germ. Bigger problem is overgrowth of a bacteria in gut (c. Difficile) during or after ab use-causes toxin and diarrhea; can be serious. ...Read more

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Can fungus infections cause lung infections?

Can fungus infections cause lung infections?

Yes: Its not very common, but fungus can cause lung infections, its more common in people whose immune system is down "due to aids for example".. ...Read more

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Can bacterial infection cause encephalitis?

Yes but likely viral: Encephalitis, inflammation of the brain, can be caused by viruses, bacteria, fungi, parasites, unknown causes, etc... Patients with identifiable causes usually have viral infections. Herpes types 1 & 2, epstein barr virus, varicella (chicken pox, shingles) virus, polio virus, coxsackie (hand-foot-mouth) virus, or mosquito-borne viruses can cause encephalitis. ...Read more

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How common are secondary bacterial infections or sepsis with a mono infection?

Not quantified: Secondary bacterial infections are common enough to make most of the lists of complications of ebv that leads to infectious mononucleosis, but i could not find that a case rate had been published at this time (i.e. A percentage of cases that develop secondary infections). The illness does cause relative immune compromise through splenic inflammation and neutropenia in some cases. ...Read more

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Dr. Heidi Fowler
2,048 doctors shared insights

Bacterial Infections (Definition)

Bacteria are tiny organisms that can only be seen with a microscope. When certain bacteria enter the body, they can cause infections that must ...Read more


Bacteria (Definition)

Are omnipresent single celled organisms which are the both the simplest form of life and the original form of life on earth. The are ...Read more