Particular viruses associated with infantile wheezing have been theorized ... In children and adults with established asthma, viral upper respiratory tract infections play a key role in producing ...

The common cold is an upper respiratory tract infection caused by different viruses, most commonly rhinovirus. Adults get a cold ... and have breathing difficulties. A barking or wheezing cough ...

In the US, statistics show that between 25-30% of male adults and 9-17 ... brain fails to stimulate breathing, while Obstructive Sleep Apnea occurs when the upper airway narrows or collapses ...