RT Journal Article SR Electronic(1) A1 Ward, L A1 O’Brien, S YR 1998 T1 Outbreak of Salmonella enteritidis phage type 21 among British tourists returning from Ostend, Belgium JF Weekly releases (1997–2007) VO 2 IS 44 SP 1132 OP DO https://doi.org/10.2807/esw.02.44.01132-en UL https://www.eurosurveillance.org/content/10.2807/esw.02.44.01132-en