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.
Abstract

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