Impact of COVID-19 infection on lung function and nutritional status amongst individuals with cystic fibrosis: A global cohort study

J Cyst Fibros. 2024 Sep;23(5):815-822. doi: 10.1016/j.jcf.2024.07.019. Epub 2024 Aug 26.

Abstract

Background: Factors associated with severe COVID-19 infection have been identified; however, the impact of infection on longer-term outcomes is unclear. The objective of this study was to examine the impact of COVID-19 infection on the trajectory of lung function and nutritional status in people with cystic fibrosis (pwCF).

Methods: This is a retrospective global cohort study of pwCF who had confirmed COVID-19 infection diagnosed between January 1, 2020 and December 31, 2021. Forced expiratory volume in one second percent predicted (ppFEV1) and body mass index (BMI) twelve months prior to and following a diagnosis of COVID-19 were recorded. Change in mean ppFEV1 and BMI were compared using a t-test. A linear mixed-effects model was used to estimate change over time and to compare the rate of change before and after infection.

Results: A total of 6,500 cases of COVID-19 in pwCF from 33 countries were included for analysis. The mean difference in ppFEV1 pre- and post-infection was 1.4 %, (95 % CI 1.1, 1.7). In those not on modulators, the difference in rate of change pre- and post-infection was 1.34 %, (95 % CI -0.88, 3.56) per year (p = 0.24) and -0.74 % (-1.89, 0.41) per year (p = 0.21) for those on elexacaftor/tezacaftor/ivacaftor. No clinically significant change was noted in BMI or BMI percentile before and after COVID-19 infection.

Conclusions: No clinically meaningful impact on lung function and BMI trajectory in the year following infection with COVID-19 was identified. This work highlights the ability of the global CF community to unify and address critical issues facing pwCF.

Keywords: COVID-19; Coronavirus; Cystic fibrosis.

MeSH terms

  • Adult
  • Body Mass Index
  • COVID-19* / complications
  • COVID-19* / epidemiology
  • COVID-19* / physiopathology
  • Cystic Fibrosis* / complications
  • Cystic Fibrosis* / physiopathology
  • Female
  • Forced Expiratory Volume
  • Humans
  • Male
  • Nutritional Status*
  • Respiratory Function Tests / methods
  • Retrospective Studies
  • SARS-CoV-2