Sticky or purulent sputum with a foul odor

The sputum is usually sticky or purulent, and a fishy odor is a clinical diagnosis of Escherichia coli pneumonia. Escherichia coli (also known as Escherichia coli) pneumonia has increased significantly in recent years and is the second most common pathogen behind community-acquired Gram-negative pneumonia after Klebsiella pneumoniae. 12% to 45% of pneumonia, accounting for 2.0% to 3.3% of all pneumonia pathogens. It is one of the main pathogenic bacteria of hospital-acquired pneumonia, and its incidence is 4.2-9.0 / 110,000, accounting for 9.0% -15.0% of Gram-negative pneumonia. The case fatality rate of the disease was as high as 60% in the 1960s, and decreased significantly after the 1980s, with 29% reported. It mainly occurs in elderly debilitating patients, patients with various chronic underlying diseases, critically ill patients, tracheal intubation, long-term use of corticosteroids and other immunosuppressive agents, long-term use of antibiotics and dysbiosis, and various immune Protein deficiency patients, etc., are susceptible to this disease.