Occurrence of virulence determinants in vibrio cholerae, vibrio mimicus, vibrio alginolyticus, and vibrio parahaemolyticus isolates from important water resources of Eastern Cape, South Africa

Table 4 Statistical comparison of the CMVGI of four Vibrio spp. Isolates and the sampling sites

CMVGI ANOVA for VC, VM and VA from freshwater
	Sum of Squares	df	Mean Square	F	Sig.
Between Groups	0.611	2	0.306	12.224	< 0.001
Within Groups	2.451	98	0.025
Total	3.062	100
CMVGI ANOVA for VC, VM and VA from brackish water
	Statistic	df1	df2	Sig.
Welch	19.963	3	25.524	< 0.001
Brown-Forsythe	19.549	3	55.145	< 0.001
CMVGI ANOVA for brackish water sampling sites
	Statistic	df1	df2	Sig.
Welch	8.959	4	40.188	< 0.001
Brown-Forsythe	6.759	4	58.796	< 0.001
CMVGI ANOVA for freshwater sampling sites
	Statistic	df1	df2	Sig.
Welch	3460.335	9	12.845	< 0.001
Brown-Forsythe	5.917	9	5.26	0.028

Key: VC = V. cholerae, VM = V. mimicus, VA = V. alginolyticus, VP = V. parahaemolyticus,C MVGI = cumulative multiple virulence gene index

ISSN: 1471-2180