This study describes the results of attempts to grow viruses from per-nasal swabs taken from 136 children with clinical pertussis.
Altogether 37 strains of a variety of different viruses were isolated. Adenovirus was the most frequent, making up 30 % of the total. Besides these, herpes simplex, measles, influenza A2, influenza B, mumps, poliovirus and respiratory syncytial virus were detected.
Bordetella pertussis was isolated from 22 % of the cases.
It appears that a pertussis-like syndrome can be caused by many agents besides Bord. pertussis and an accurate diagnosis requires laboratory confirmation.