Evaluation of urine and sputum samples detected bacterial pathogens in 58.0 percent of CAP sufferers; S. Pneumoniae and Haemophilus influenza were most common, being within 28.2 percent and 18.3 percent of patients, respectively. Additionally, 27.5 percent of samples were positive for at least one respiratory virus; individual enterovirus or human being rhinovirus were the most frequent, present in 13.3 percent.The major cause of most lung cancers is. Yes, you guessed it. Using tobacco. Or more exactly, the inhalation of the carcinogens contained within the smoke. If a smoker can be subjected to radon in the environment also, well, that is clearly a ticking period bomb waiting to set off. Beyond both of these contributors, there exists a form of lung cancer called mesothelioma, which results from contact with asbestos. However, cigarette smoke continues to be the major causes behind most forms of lung cancer.