RSV

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It's so sad to see baby sick.
Even sadder to get infected with it. It makes my new pregnancy doubly troublesome.

[Source: http://www.babycenter.com/0_respiratory-syncytial-virus-rsv_1754.bc]

Respiratory syncytial virus (RSV) infects most children sooner or later (usually before the age of 2). It often starts out with cold symptoms. In fact, for many babies and young children, the virus is no more troublesome than a cold.

SYMPTOM GUIDE

For a few, though, mild cold symptoms (such as a runny nose, a minor cough, and a low fever) develop into a more pronounced cough, labored breathing, and sometimes wheezing. Your baby may also be irritable and restless and have a poor appetite.

It's important to call the doctor if you think your baby may have RSV, because the virus is the most common cause of two lung disorders in babies, bronchiolitis (which swells the small airways and fills them with mucus, blocking airflow) and pneumonia (an infection and inflammation of the lungs). Either of these conditions can be dangerous — even deadly — for babies, particularly those younger than 6 months.