For many years it was widely believed that the first variants of infectious bronchitis virus (IBV) occurred in the early 1950s as Jungherr et al. (1956) in the USA showed that the Connecticut (Conn) ...

He went on to speculate that lung conditions including chronic bronchitis and emphysema could become the third-greatest cause of death worldwide by the year 2020. RELATED: More Congested With Mucus at ...

Once nearly eradicated, the “old man’s disease” is back and suffocating younger miners. Federal cuts risk putting a solution ...

The most common type of COPD is called chronic bronchitis, associated with extensive inflammation ... on physical exertion such as walking or running),coughing, excess mucus expectoration (phlegm ...

Medically reviewed by Amelia MacIntyre, DO Mucus, a fluid in your upper respiratory system, is usually clear. But a number of health conditions can cause it to turn brown. Also known as brown phlegm ...