Viral lung infections---pneumonia, upper respiratory tract infection or influenza---can knock you off your feet, but typically are not serious unless you are elderly or your immune system is compromised.
Symptoms
According to KidsHealth.org, viral lung infections cause a cough that produces small amounts of mucus, a low-grade fever, wheezing, muscle aches and exhaustion.
Warning
You can catch a viral lung infection from an infected person who sneezes or coughs near you, or with whom you've shared eating utensils or cups.
Time Frame
The incubation period---the time between exposure and the appearance of symptoms---varies from less than a day to nearly a week. Duration of the illness also depends on the virus causing it. You may be sick for as little as seven days, or as long as a month, says KidsHealth.
Treatment
Antibiotics are typically not given for viral illnesses, although your doctor may prescribe such medication for pneumonia. Fluids and rest are recommended, with over-the-counter remedies for fever and body aches. A hospital stay is indicated if symptoms include a high fever or respiratory distress, says KidsHealth.
Prevention
Vaccinations may prevent viral lung infections, and are recommended if you have asthma or chronic illnesses that compromise your immune system, reports KidsHealth. Antiviral medication may also be available.
Tags: your immune system, immune system, lung infections, says KidsHealth, your immune