Table B.3.

Description of the literature search on mastitis

Keyword combination of the ‘topic search’	TS = ((dairy AND cow* OR cattle) AND (mastitis OR “somatic cell*” OR “udder health”) AND (risk AND (barn OR pasture OR “hous*”)) NOT (goats or sheep or “buffalo*”))” as well as TS = ((dairy AND cow* OR cattle) AND (mastitis OR “somatic cell*” OR “udder health”) AND (management AND (barn OR pasture OR “hous*”)) NOT (goats or sheep or “buffalo*”))
Defined time period	1 January 2010 to 8 February 2022 in order to focus on present housing systems and practices
Exclusion criteria	–exclusion of proceedings, book chapters and editorial material, –exclusion of articles in a language other than English, –exclusion of articles from other countries than Europe, United States and Canada, –exclusion of articles published in categories others than agricultural animal sciences, veterinary sciences, –exclusion of articles on husbandry systems or practices other than identified under Tor1, –exclusion of case studies of mastitis outbreaks, –exclusion of articles on other topics: breeding, feeding, fertility, udder cleanliness and other welfare indicators, milk production, mortality, description of management without associations to health, –exclusion of articles with other study design than observational/epidemiological studies and experimental studies: surveys of farmer's attitudes, economical calculations, intervention/ medical treatment studies, –exclusion of review articles.
Outcome	Of 214 search results of research articles, 39 research articles were identified as relevant. A total of further eight relevant research articles cited in the selected literature were included in the review (snowball search). In total, 47 research articles were reviewed in detail.