Table 2.

Tritrichomonas foetus prevalence of Wyoming individual bulls

Year	No tested	No positive	Prevalence (%)	References
1997	433	5	1.15	[7]
1998	920	18	1.96	[7]
1999	1525	41	2.69	[7]
2000	4880	71	1.45	[7]
2001	6025	78	1.29	[7]
2002	6515	71	1.09	[7]
2003	6855	43	0.63	[7]
2004	7515	44	0.59	[7]
2005	7450	79	1.06	[7]
2006	7270	57	0.78	[7]
2007	7080	50	0.71	[7]
2008	7275	45	0.62	[7]
2009	7597	98	1.29	[7]
2010	8222	17	0.21	[7]
2011†	10,301	18	0.17	[25]
2012	10,172	51	0.50	[25]
2013	10,142	25	0.25	[25]
2014	10,168	12	0.12	[25]
2015	10,054	14	0.14	[25]
2016	10,826	3	0.03	[25]
2017	11,369	0	0	[25]
2018	10,680	0	0	[25]
2019	9920	0	0	#

^†Starting the year 2011, the data were from July 1 of the year to June 30 of the next one instead of the calendar year of January 1 to December 31 for the data presented from 1997 to 2010.

^#Personal communication with permission of Dr Jim Logan and Dr Douglas Leinart of Wyoming Livestock Board.