Table 4.

Number of investigator mice tested for MPV antibodies after rooms were declared clear of MPV

Room	2005	2006	2007	2008	2009	2010	Total
A	0	31	87	47	91	112	368
B	0	33	64	63	151	5	316
C	0	0	17	23	13	40	93
D	0	0	70	70	244	19	403
E	0	0	40	0	2	0	42
F	0	17	57	14	169	31	288
G	2	14	61	20	24	28	149
H	0	10	23	2	37	6	78
I	0	5	3	0	0	0	8
J	4	2	4	26	105	0	141
K	0	10	19	0	111	7	147
L	112	573	184	0	739	172	1780
Total	118	695	629	265	1686	420	3813