How will a doctor differentiate viral respiratory infection from bacterial infection? Signs are fever cough congestion, no sore throat - 4 days.

Usually easy. Normal w/ viral uri's to have a temp up to 72 hrs. If u have sore throat it's very unlikely to be strep when u also have cough/congestion (not always the case with kids). Flu is peaking now (in us) classic symptoms are high temp congestion, body aches, +\-sore throat or cough. If u r feeling unusually ill or measured temp exceeds 3 days u should be seen (sooner if u have chronic health cond.
Symptoms... Typically, with a bacterial respiratory infection, the fever tends to be higher and the sputum tends to be discolored from baseline. The white blood cell count is often elevated. With a viral respiratory infection, the fever tends to be low-grade and the cough can be non-productive or clear sputum. However, there is considerable overlap so, if symptoms don't improve over a few days, see a doctor!

Related Questions

How do you know when a viral infection turns to bacterial infection? Still have sore throat, cough, been a week

If. Drainage turns thick yellow and green, you start running a fever or you are getting worse rather tan better after a week you should see your doctor to see if it is now bacterial. Read more...

At night I have a sore throat only and no cough. During the day I have a moist cough but no sore throat. Could this still be a bacterial infection?

Probably not. Chronic cough like yours probably have other reasons. If you don't smoke, things like asthma, allergic rhinitis with post-nasal drip and acid reflux probably are more common than one would think. Read more...
None. none of what you are describing indicate a bacterial infection, actually it resemble more of allergy response. treat your symptoms with allergy medicine like zyrtec during the day and benadryl (diphenhydramine) at night.take OTC cough medicine like mucinex DM at least twice a day, with or without elixir like robitussin, or nyquill. stay well hydrated. Read more...

My Doctor told me I have a bacterial infection and congestion. Sore troat. But told me is an atypical bacteria. What does that means? No mononucleosis.

Type of germ. Atypical bacteria is a label given to a group of germs with different physical characteristics than usual bacteria.The term has no significance to you, other than the doc has made the assessment that the features of your infection will respond best to meds used to treat the atypicals. It is doctor jargon,sorry we're so confusing. Read more...