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Published on: February 23, 2014
Pertussis is common in nonvaccinated infants hospitalized for respiratory syncytial virus infection
Matti Korppi1, Johanna Hiltunen
1Department of Pediatrics, Kuopio University Hospital, Kuopio, Finland. matti.korppi@uku.fi
Insights
Bordetella pertussis co-infection was found in 8% of infants hospitalized with respiratory syncytial virus (RSV). Pertussis should be considered in unvaccinated infants with lower respiratory tract infections to prevent underdiagnosis.
Area of Science:
- Pediatrics
- Infectious Diseases
- Microbiology
Background:
- Respiratory syncytial virus (RSV) and Bordetella pertussis are common respiratory pathogens in infants.
- Evidence suggests the possibility of co-infection between RSV and B. pertussis.
Purpose of the Study:
- To investigate the prevalence of B. pertussis co-infection in infants hospitalized with RSV.
- To determine if clinical characteristics can differentiate between RSV infection and mixed RSV-pertussis infection.
Main Methods:
- Antigen detection was used to identify RSV in 117 infants under 6 months hospitalized with respiratory tract infections.
- Polymerase chain reaction (PCR) was employed to detect B. pertussis in 88 infants reporting cough.
Main Results:
- RSV was detected in 78% of infants, while B. pertussis was found in 8%.
- Mixed RSV-pertussis infection occurred in 7 cases (approximately 6% of all infants).
- Clinical features did not reliably distinguish between isolated RSV and co-infections.
Conclusions:
- Bordetella pertussis co-infection was present in 8% of infants hospitalized for RSV.
- Pertussis should be considered in the differential diagnosis of lower respiratory tract infections in unvaccinated infants to ensure timely diagnosis and treatment.
Background:
There is some evidence that Bordetella pertussis can cause co-infection with respiratory syncytial virus (RSV).
Subjects And Methods:
RSV etiology was studied by antigen detection in 117 infants <6 months of age, who were hospitalized for respiratory tract infection during an RSV epidemic. B. pertussis etiology was studied by polymerase chain reaction in those 88 in whom parents or nurses reported cough.
Results:
RSV was found in 91 (78%) infants and B. pertussis in 9 (8%) infants. In 7 cases, there was mixed RSV-pertussis infection. In retrospective analysis, RSV and mixed RSV-pertussis cases could not be separated by clinical characteristics.
Conclusions:
Co-infection caused by B. pertussis was present in 8% of infants, aged <6 months, who were hospitalized for RSV infection. To avoid under-diagnosis, pertussis should be considered in all nonvaccinated infants with lower respiratory tract infection.
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