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. 2004 Jun;21(3):317–323. doi: 10.1093/fampra/cmh319

Table 2.

Further analysis of 100 samples by additional PCR

Pathogen IF, rhinovirus PCR and bacterial culture Further PCR All methods combined

n (%)
n (%)
n (%)
Virus agents
    Rhinovirus 20 (20.0) 17 (17.0)
    Influenza A 5 (5.0) 5 (5.0) 5 (5.0)
    Parainfluenza 1 1 (1.0) 1 (1.0) 1 (1.0)
    Parainfluenza 2 2 (2.0) 2 (2.0) 2 (2.0)
    Parainfluenza 3 2 (2.0) 3 (3.0) 3 (3.0)
    Parainfluenza 4 4 (4.0) 2 (2.0)
    RSV 4 (4.0) 3 (3.0) 4 (4.0)
    Human coronavirus
    OC43 7 (7.0) 6 (6.0)
    Adenovirus 1 (1.0) 1 (1.0)
    Enterovirus 4 (4.0) 4 (4.0)
Bacterial agents
    Chlamydia pneumoniae 2 (2.0) 1 (1.0)
Mixed infection
    Streptococcus group G and rhinovirus 1 (1.0)
    Streptococcus group G, rhinovirus and parainfluenza 4 1 (1.0)
    C. pneumoniae and rhinovirus 1 (1.0)
    Parainfluenza 4 and rhinovirus 1 (1.0)
    Human coronavirus OC43 and rhinovirus 1 (1.0)
    Parainfluenza 4 and C. pneumoniae 1 (1.0) 1 (1.0)
No pathogen detected 65 (65.0) 67 (67.0) 49 (49.0)