is yellow mucus bacterial or viral

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Dr. Joel Gallant answered:

How Do you know if thick yellow/green mucous is bacterial or viral and if antibiotics are needed? Don't want unnecessary antibiotics.

Bronchitis

Antibiotics
The color and thickness of the mucus tells you nothing. By itself, it's not a reason for antibiotics. If you also had fever, shortness of breath, and/or chest pain, then you should be checked for pneumonia.
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Dr. Richard Wieder answered:

2 1/2 wks ago developed bronchitis - 1 wk w/amox - Dr wouldn't prescribe more - said this was prob viral - now it's in my head & sinuses & cough - yellow mucus & phlegm. It's prob still viral, right?

Bronchitis

Amoxil
Your infection may be viral but could also be caused by a bacteria that was not adequately treated by Amoxicillin. If your symptoms persist, you should have your MD evaluate this further. There are also other medications that could help your symptoms as well.
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URTI, how wud i know if it is viral or bacterial. Phelgm is green and yellow and lots. Moving to throat - bronchitis? What type antibiotic is best?

URTI

Neck-throat
if it has been more than a week that you are sick, you need to see your physician for an antibiotic
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Dr. Marc D. Wager answered:

Should child still be in lot pain with ears when has 2 perforated drums? has lots of yellow discharge, 1st nurse said bacterial, 2nd said was viral

Interesting question

Children
USUALLY when someone has a middle ear infection, the pain is caused by pus behind the ear drum, causing the ear drum to bulge. Once the ear drum perforates, there's no bulging or pressure because the pus is draining through the perforation. However, this probably needs treatment with ear drops and/or oral antibiotics. The short answer is: this patient needs to see a doctor and get treatment!
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My eye has been having clear discharge and some yellow, with crusting for a day and a half, how do I know if it is bacterial or viral conjunctivitis?

Treatments vary

Conjunctivitis
The symptoms can vary from allergic conjunctivitis to as you state, bacterial or viral conjunctivitis. Usually on slit lamp (microscopy) exam in the office the conjunctival surface and cornea can give us clues. If you have no pain or vision loss, you may want to try an OTC allergy drop for a day, since it's Sunday. If not better by the Monday AM, then see your provider in the morning.
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Dr. David A. Cohen answered:

Does brownish yellow thick mucous usually indicate bacterial infection?

No

Bacterial_infections
You can also have that type of mucus production with a viral bronchitis
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Had cold: Fever, sinus pressure, headache, runny nose. now still coughing for 1.5 months w mucous. Viral or bacterial infect? Need antibiotics? Which?

See your doc

Rhinitis
A lingering cough after an URTI can mean a sinus infection or reactive airways, such as asthma. You need to see your doctor to determine what the problem is. An antibiotic should help if there is a sinus infection but will not help if it is asthma.
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I've had a lot of yellow/green mucous discharge and burning pain for months, now. Negative STD panels as well as negative for yeast and bacterial vaginosis. ?

TRICHOMONAS

Candida
One of the common etiology of vaginitis is trichomonas infection presenting with vaginal itch and colored discharge.
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Dr. Robert Kwok answered:

What is the difference between a bacterial infection and a viral infection?

Different germ types

Antibiotics
Bacteria are larger germs, and they can live in a broth or culture dish in a lab, or sometimes in soup, egg salad, etc... Treatment is with "antibiotics", but the exact term should be "antibacterials". Viruses are much smaller, and cannot reproduce on their own. Viruses have to invade other cells, such as our own cells, and use those cells to make new viruses. Anti-virals are used to stop viruses.
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Dr. Peter Wilk answered:

Can untreated genital warts weaken your immune system or not as its viral not bacterial?

No

Genital_warts
Genital warts - caused by the HPV virus - are common and contagious, but they are not dangerous. A person's body mounts an immune response to the virus, but is usually unable to kill the virus and the warts they produce. The overall immune system is not affected and immune responses to other bodily threats will not be adversely affected. Peter Wilk, MD
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