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. 2020 Aug;39(8):e176-e182.
doi: 10.1097/INF.0000000000002681.

Respiratory Virus-related Emergency Department Visits and Hospitalizations Among Infants in New Zealand

Namrata Prasad  1   2 , Adrian A Trenholme  3 , Q Sue Huang  1 , Jazmin Duque  4 , Cameron C Grant  2   5 , E Claire Newbern  1
Affiliations

Respiratory Virus-related Emergency Department Visits and Hospitalizations Among Infants in New Zealand

Namrata Prasad et al. Pediatr Infect Dis J. 2020 Aug.

Abstract

Background: Estimates of the contribution of respiratory viruses to emergency department (ED) utilization remain limited.

Methods: We conducted surveillance of infants with acute respiratory infection (ARI) associated ED visits, which then resulted in either hospital admission or discharge home. Seasonal rates of specific viruses stratified by age, ethnicity, and socioeconomic status were estimated for both visits discharged directly from ED and hospitalizations using rates of positivity for each virus.

Results: During the 2014-2016 winter seasons, 3585 (66%) of the 5412 ARI ED visits were discharged home directly and 1827 (34%) were admitted to hospital. Among visits tested for all respiratory viruses, 601/1111 (54.1%) of ED-only and 639/870 (73.4%) of the hospital-admission groups were positive for at least one respiratory virus. Overall, respiratory virus-associated ED visit rates were almost twice as high as hospitalizations. Respiratory syncytial virus was associated with the highest ED (34.4 per 1000) and hospitalization rates (24.6 per 1000) among infants. ED visit and hospitalization rates varied significantly by age and virus. Māori and Pacific children had significantly higher ED visit and hospitalization rates for all viruses compared with children of other ethnicities.

Conclusions: Many infants with acute respiratory virus infections are managed in the ED rather than admitted to the hospital. Higher rates of ED-only versus admitted acute respiratory virus infections occur among infants living in lower socioeconomic households, older infants and infants of Māori or Pacific versus European ethnicity. Respiratory virus infections resulting in ED visits should be included in measurements of ARI disease burden.

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