The Role of Infection in Acute Exacerbation of Idiopathic Pulmonary Fibrosis

Table 3

Specific IgM antibodies against 10 common pathogens (serum, number of positive cases, and positive rate).

IgM	AE-IPF ()	Stable IPF ()	Control ()
Mycoplasma	5, 12.2%	6, 5.6%	5, 7.1%
Legionella	3, 7.3%	5, 4.6%	0, 0%
Respiratory syncytial virus	2, 4.9%	4, 3.7%	0, 0%
Adenovirus	3, 7.3%	1, 0.9%	2, 2.9%
Influenza B virus	1, 2.4%	3, 2.8%	0, 0%
Cytomegalovirus	1, 2.4%	1, 0.9%	0, 0%
Chlamydia	0, 0%	1, 0.9%	0, 0%
Rickettsia	0, 0%	0, 0%	0, 0%
Parainfluenza Virus	0, 0%	0, 0%	1, 1.4%
Influenza A Virus	0, 0%	0, 0%	0, 0%
Total	15, 36.6%^#	21, 19.4%	8, 11.4%

After chi-square test, vs. stable IPF; vs. healthy controls.