Table 1.

Eligibility criteria for inclusion

Element	Inclusion criteria	Exclusion criteria
Population	Adults (≥ 18 years of age)	Paediatric/adolescent patients < 18 years of age
		Mixed-age populations where data for adults were not separately reported
Study design	Primary observational research studies reporting incidence and/or prevalence of RSV in any population	Studies not reporting these outcomes
		Studies with sample size < 50
		Studies investigating a different infection where RSV is investigated only as a co-infection
		Studies in highly specialized populations (e.g. stem cell transplant recipients)
Region	USA, Canada, Europe, Oceania	Studies from other regions
Language	Studies published in English	Studies published in other languages
Time limits	Publication from January 2000 onwards	Published prior to 2000

RSV, respiratory syncytial virus