Decrease in healthcare-associated infection rates in preterm infants-longitudinal data from 15 years of nationwide

Ferenc Darius Ruether1,2, Frank Schwab1,2, Gizem Karadağ1,2

  • 1Institute of Hygiene and Environmental Medicine, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlinhttps://ror.org/001w7jn25, Berlin, Germany.

Insights

Nationwide surveillance of healthcare-associated infections (HAI) in preterm infants using NEO-KISS in Germany showed significant reductions in sepsis, pneumonia, and necrotizing enterocolitis rates between 2008 and 2022.

Area of Science:

  • Neonatalogy
  • Infectious Disease Epidemiology
  • Public Health Surveillance

Background:

  • Preterm infants are highly susceptible to healthcare-associated infections (HAI).
  • Nationwide HAI surveillance systems are crucial for monitoring and reducing infections in high-risk neonatal populations.
  • The NEO-KISS system was implemented in Germany to track HAI in neonates.

Purpose of the Study:

  • To present healthcare-associated infection (HAI) rates in high-risk neonates following the nationwide implementation of the NEO-KISS surveillance system in Germany.
  • To identify risk factors associated with the development of HAI in this vulnerable population.
  • To analyze trends in HAI incidence densities over time.

Main Methods:

  • An observational study analyzing retrospective data from the NEO-KISS system (2008-2022).
  • Inclusion criteria: Infants with a birth weight < 1500 g.
  • Incidence densities for healthcare-associated sepsis (HAS), healthcare-associated pneumonia (HAP), and necrotizing enterocolitis (NEC) were calculated and analyzed using Cox-proportional hazard regression.

Main Results:

  • Data from 118,214 infants across 251 neonatology departments were analyzed.
  • Incidence densities of HAS and HAP decreased significantly between 2008-2012 and 2018-2022 (e.g., HAS decreased by 33.3%, HAP by 46.7%).
  • The period of admission remained a significant factor for HAS, HAP, and NEC in multivariable regression analysis.

Conclusions:

  • The NEO-KISS surveillance data from 2008-2022 indicates a nationwide reduction in incidence densities of HAS, HAP, and NEC among high-risk neonates in Germany.
  • Continuous engagement with and utilization of surveillance data from NEO-KISS likely contributed to these observed reductions in HAI.
  • Effective surveillance systems are vital for improving outcomes in neonatal intensive care.
Abstract

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