Table 1.

The algorithm of systematic search terminology.

Database	Term Search Outcome
PubMed Central	“Campylobacter”[All Fields] AND “Vaccine”[All Fields] AND “Chicken”[All Fields] AND (“1970/01/01”[PDat]: “2020/12/31”[PDat])
Elsevier ScienceDirect	“Campylobacter” AND “Vaccine” AND “Chicken”
Scopus	TITLE-ABS-KEY (“Campylobacter” AND “Vaccine” AND “Chicken”) AND (LIMIT-TO (PUBYEAR, 2020) OR LIMIT-TO (PUBYEAR, 2019) OR LIMIT-TO (PUBYEAR, 2018) OR LIMIT-TO (PUBYEAR, 2017) OR LIMIT-TO (PUBYEAR, 2016) OR LIMIT-TO (PUBYEAR, 2015) OR LIMIT-TO (PUBYEAR, 2014) OR LIMIT-TO (PUBYEAR, 2013) OR LIMIT-TO (PUBYEAR, 2012) OR LIMIT-TO (PUBYEAR, 2010) OR LIMIT-TO (PUBYEAR, 2009) OR LIMIT-TO (PUBYEAR, 2008) OR LIMIT-TO (PUBYEAR, 2007) OR LIMIT-TO (PUBYEAR, 2006) OR LIMIT-TO (PUBYEAR, 2005) OR LIMIT-TO (PUBYEAR, 2004) OR LIMIT-TO (PUBYEAR, 2003) OR LIMIT-TO (PUBYEAR, 2002) OR LIMIT-TO (PUBYEAR, 2001) OR LIMIT-TO (PUBYEAR, 2000) OR LIMIT-TO (PUBYEAR, 1999) OR LIMIT-TO (PUBYEAR, 1998) OR LIMIT-TO (PUBYEAR, 1997) OR LIMIT-TO (PUBYEAR, 1996) OR LIMIT-TO (PUBYEAR, 1995) OR LIMIT-TO (PUBYEAR, 1994) OR LIMIT-TO (PUBYEAR, 1993) OR LIMIT-TO (PUBYEAR, 1992) OR LIMIT-TO (PUBYEAR, 1991) OR LIMIT-TO (PUBYEAR, 1990) OR LIMIT-TO (PUBYEAR, 1989) OR LIMIT-TO (PUBYEAR, 1988) OR LIMIT-TO (PUBYEAR, 1987) OR LIMIT-TO (PUBYEAR, 1986) OR LIMIT-TO (PUBYEAR, 1985) OR LIMIT-TO (PUBYEAR, 1984) OR LIMIT-TO (PUBYEAR, 1983) OR LIMIT-TO (PUBYEAR, 1982) OR LIMIT-TO (PUBYEAR, 1981) OR LIMIT-TO (PUBYEAR, 1980) OR LIMIT-TO (PUBYEAR, 1979) OR LIMIT-TO (PUBYEAR, 1978) OR LIMIT-TO (PUBYEAR, 1977) OR LIMIT-TO (PUBYEAR, 1976) OR LIMIT-TO (PUBYEAR, 1975) OR LIMIT-TO (PUBYEAR, 1974) OR LIMIT-TO (PUBYEAR, 1973) OR LIMIT-TO (PUBYEAR, 1972) OR LIMIT-TO (PUBYEAR, 1971) OR LIMIT-TO (PUBYEAR, 1970))