Questions tagged [bacteria]

It is about the microbes of domain Bacteria that can act as both infectious agents and symbionts (e.g.commensals) in our body.

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Tick bite treatment. Doxycycline intake suspended after 3 days only. If substituted by Bactrim, is there a risk to develop bacteria resistant?

A patient was bitten by a tick and carried the tick on his skin for 5/6 days (which got engorged at the end). Then the tick dropped spontaneously. He has been prescribed a preventive antibiotic course ...
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Have any novel virus or bacteria ever been created by man in the laboratory that we know of?

This question may be off topic for medicine. Let us not consider COVID19. Are there any known man made viruse or bacteria ever created or modified by man that we know of? Bio weapons labs weaponize ...
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Does the stool test for Helicobacter pylori show only acute infections?

There are four options when being tested for Helicobacter pylori - blood test, stool test, breath test and scope test. (Helicobacter pylori (H. pylori) infection) Scope test is definitely the most ...
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Best way to clean dry fruits and nuts before eating

Recently I got acute Diarrhoea, which I suspect to be due ton a new packet of dates which I purchased recently (1st time I'm using this). I have dry fruits and nuts regularly, however I haven't ...
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What is the justification for bacterial vaccines for which the body has natural immunity?

What is the purpose of using vaccines against commonly found bacteria? Since the human immune system develops at birth and shortly thereafter (via colostrum) natural defenses against common bacteria, ...
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For best hygiene, should we use hard block/bar soap or bottled soft soap?

The accepted answer in When is hand sanitizer appropriate/sufficient in place of warm water and soap? mentions that you should avoid bar soap yet the link provided no longer says this. I have heard ...
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Use of antibiotics with chest infections

I would like to have a confusing part of medicine cleared up. My experience of medical intervention is as follows. As pointed out in the answer to Does taking antibiotics make you immune to virus? ...
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Is it possible that inhaling copper vapor, in some form, can help in treating a bacterial or viral infection of the lung? [closed]

There are many studies showing the antimicrobial properties of copper. Based on these properties, is it possible that inhaling copper vapor, in some form, can help in treating a bacterial or viral ...
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Why does a dental abscess / infection usually go away after a root canal?

After an abscess is diagnosed and a root canal treatment is done on a tooth, why does the infection go away? It seems all the root canal treatment does is remove the total volume of space for the ...
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Why are bacteriophage viruses so infrequently used in the western countries?

Bacteriophages are, in eastern countries including Russia, a pretty common, or at least well known, approach to get rid of bacterial infections. (This is discussed in How Dangerous Are Superbugs ...
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Can intestinal bacterial overgrowth result in hypophosphatemia?

This article shows that there is variability in the degree that bacteria bind to phosphate in the gut. Is it possible that intestinal bacterial overgrowth results in hypophosphatemia?
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Difference between BHI biphasic and Castaneda culture media in diagnosis of infective endocarditis

So I am currently studying Hematology/CVS and there is some vital microbiology attached to this. I am studying infective endocarditis and one of the Duke's Criteria involves a Lab Diagnosis which ...
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Can a runny nose “Shoot Blanks”?

Every time i have a runny nose I'm comforting myself by thinking "It's ok, the body is getting rid of pathogens now" But is that really the case ? does every 'drop' of nasal mucus contain pathogens ?
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The likelihood of contracting a disease from flies?

Given a housefly has landed on your food, and that you then consume it, what is the likelihood of contracting some malady directly attributable to the fly? I'm aware that flies can carry diseases ...
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When taking antibiotics, does every single germ have to die?

When I get sick and need to take antibiotics, I get admonished to carry the treatment until the end, otherwise I am breeding antibiotic-resistant superbugs. Does this mean that when I finish the ...
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Klebsiella pneumoniae and corticosteroids

Does anyone know why taking corticosteroids is a risk factor of a Klebsiella pneumoniae infection? Also, is it normal to find Klebsiella pneumoniae in the throat area or upper respiratory tract? I'd ...
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Is it possible to immunize against bacteria?

In anticipation of going to a region with known prevalence of flesh eating bacteria, can an individual take antibiotics prior to going to prevent it from being contracted? https://www.cnn.com/2019/07/...
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Has a guideline been set for the optimal pH level in the mouth?

My thought is that improper pH might might be a factor in bacterial growth and tooth decay. Supporting the idea is this research summary that implicates low pH (high acidity) to Fluorosis. Notes: ...
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Nasal congestion or fever as a mechanism to combat infection

As far as I know, nasal congestion and fever are generally regarded as symptoms of many illnesses (e.g. flu), not as mechanisms that the body uses to fight an infection. Nonetheless, a lot of people ...
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Bacterial growth inhibitors used in Deodorants

I'd like to understand what common ingredients in deodorants contribute to the inhibiting growth of odour creating bacteria. I'm only looking for a handful of the most obvious chemicals, but I'd like ...
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Streptococcus pyogenes mutation and recurrence

Does the bacteria that cause strep throat also mutates, just like the virus that cause flu? In the same season, is it possible for a person to be infected multiple times (concurrently or not) by the ...
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What are “cryptic bacteria”?

I came across the term "cryptic bacteria" a few times in the context of biochemistry (Google search), but I couldn't find a definition. What does "cryptic" mean in that context?
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Can adults get new gut bacteria from external exposure?

I am not a student nor professional in medicine or physiology. I understand that newborns get their gut bacteria during childbirth from the contact with the mother (I am going to assume this happens ...
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Do humidifiers help cure the flu?

According to this report, absolute humidity affects transmission and survival of the influenza virus with 90% accuracy. Lower humidity at winter promotes both the influenza virus transmission and its ...
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Why people wash their hands before dinner even if they eat with utensils and not hands?

Many health professionals advocate washing hand before dinner. But is it necessary if we do not use our hands to directly touch the food we are going to ingest? Can bacteria move from our hands along ...
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I poured out a bulging milk carton - am I in danger?

I was cleaning out my fridge and came across a milk carton (2%) that was bulging. I opened the cap and it released gas, and a horrible smell. I poured it down the drain and ventilated my apartment. ...
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Bacteria location in food poisoning?

Where is the majority of bacteria located in food that leads to food poisoning? I.E in most cases is it on the surface, or deep within the food (i.e in the case of "cooked" meat, or balanced?
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How much body fluid required to actually transmit a sexually transmitted disease (STD)?

While reading about sexually transmitted disease, I always wonder how much body fluid is actually required to transmit some diseases, specially in the case of other kinds of sex (masturbation, hand ...
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Did I catch a cold from eating unwashed fruit?

Recently I caught a cold in presumably an amazingly short period of time (~6h). From prior infections I had the experience to have 24 to 48 hours "left" being a bit ill, before being forced to stay in ...
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Is targeted antimicrobial peptide mouthwash currently available anywhere (including experimentally)?

For reference: http://newsroom.ucla.edu/releases/ucla-scientists-explain-mechanism-that-makes-their-mouthwash-so-effective-against-tooth-decay Antimicrobial peptides as mouthwash were first invented ...
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How to sterilize the human intestine using a safe method?

I want to know how can one sterilize their intestine (both small/large) and what are the consequences.
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Does stopping fever hinder the process of killing bacteria via fever?

Since the body produces fever in order to kill bacteria, wouldn't decreasing the fever by taking anti fever medication decrease the body's ability to fight the bacteria? Assuming you have non life ...
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Would showering with germicidal water be beneficial or harmful?

Suppose a device was able to make water remove 99.99 % of bacteria on the incident surface (assuming that the water is germicidal by itself, whatever the reason – e.g. by means of an additive which ...
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Can you get infections by washing your body with someone else's water?

I was in a debate with someone about some religious topics. And one of them was a religious treatment ritual that included taking someone else's saliva and throwing water on his back then mixing both (...
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Is it sufficient to wash utensils, which have touched chicken, with soapy water

In the kitchen, I am very health conscious and try to prepare and store foods with care After working with a whole chicken, I usually wash the chopping board and knife with hot (but not boiling) ...
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Prepare tea directly in water boiler - dangerous?

Is it dangerous to prepare tea directly in a water boiler? If I prepare green tea in a water boiler there is some discoloring of the container. Are there any bacteria/ molds which are dangerous to one'...
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Why stomach ulcer need more than one antibiotic at the same time?

Almost all treatment recommendation for gastritis, duodenitis or peptic ulcer that has Helicobacter pylori, calls for 2 or 3 antibiotic at the same time, why is that ? Why not use a single effective ...
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Hospital says their blood test caused sepsis. How serious is this?

My wife went to an Ontario (Canada) public hospital and they performed a blood test, among other things. The test revealed a presence of bacteria in the blood. They said they will send it for analysis ...
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What is the significance of “patients zero” in infectious disease beyond epidemiology?

A common focus of press releases following outbreak of a "new" infectious disease is the "patient zero", or first individual to show infection. Why? I can understand how epidemiologically it would be ...
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Should Ureaplasma Urealyticum be treated if it doesn't cause any symptoms?

Ureaplasma Urealyticum is a bacterium that can be passed through sexual contact although it is not considered a classic STI or STD because of its low degree of pathogenicity (ie, harm the infected ...
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Can a healed fracture impact the structure of the sinus?

Could a healed fracture, years old, cause ridges/distress in the sinus? Enough for bacteria or fungus to cling to and cause a sinus infection? I researched some pictures of how the inside of the ...
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What type of diet is effective at eliminating small intestinal bacterial overgrowth?

What type of diet is effective at eliminating small intestinal bacterial overgrowth (SIBO) and how long does one need to be on it?
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how long can H.Pylori last if not cured?

Is it possible for H.Pylori to last for 10 years if not cured properly?
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Why does a yeast infection burn?

I am new to this site and not entirely sure how much background knowledge I should posses in order to ask questions. However, I am curious as to why a yeast infection burns and itches? What is the ...
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How do doctors decide on the duration of an antibiotic regimen?

Many upper respiratory infections, otitis media in children, sinusitis and other infections, are treated with antibiotics (if these are bacterial infections, of course). Doctors usually prescribe a ...
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What are the countries restricted for Workings as a TB diagnosed individual?

I came across some shocking information that GCC countries and Brunei doesn't give work visa for person who was diagnosed by TB in past. Any spots in chest will be enough evidence to cancel the ...
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Lactase quantity test?

Is there a way to reliably test the quantity of lactase enxymes in a solution? For example, if I were to culture multiple bacterial species which produce lactase. Is there a way to count the lacyase ...
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Is there any test to identify bacteria?

When I got some upper respiratory infection the doctor always prescribed broad-spectrum antibiotics like amoxicillin. Is there any test to identify bacteria, and if so, why doesn't the doctor order ...
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dangers of keeping blood in a jar

What are the dangers of collecting menstrual blood in a jar for a week and then paint with it? Will there be any dangerous bacteria in the blood that could be airborne? Is there any substance I can ...
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Does fasting improve your immune system even when you are already having some infection?

I am one of the self-motivated activists who run some groups to answer various misconceptions about science and try to fight against ignorance, pseudo-sciences and blind faiths. I was recently asked ...