Table A6.

Flock SLRV prevalence in each continent from 1981 to 1990.

Continent	Studies	N	Prevalence		Range
			Mean	CI 95%	Min	Max
Africa	1	13	7.69	1.37–33.31	7.69	7.69
Asia	0	0	N/A 1	N/A	N/A	N/A
Europe	4	477	58.49	54.02–62.83	12.50	98.94
North America	12	675	62.96	59.26–66.52	0.00	100.00
South and Central America	0	0	N/A	N/A	N/A	N/A
Global	17	1165	60.52	57.68–63.28	0	100

¹ N/A, not applicable.