Table 6. Number (%) of centers routinely performing diagnostic tests on their clinical staff or patients before the start of ovarian stimulation.
July August
n=180
Sept
n=147
Oct
n=110
Nov
n=138
Dec
n=99
No cases 125 (69.4) 91 (61.9) 57 (51.8) 63 (45.7) 39 (39.4)
Positive cases 55 (30.6) 56 (38.1) 53 (50.2) 75 (54.3) 60 (60.6)
Proportion of affected clinical staff
1-2%
3-5%
6-10%
>11%

24 (13.3)
17 (19.4)
9 (5.0)
5 (2.8)
30 (20.4)
11 (7.5)
9 (6.1)
6 (4.0)
24 (21.8)
18 (16.4)
8 (7.3)
3 (2.7)
38 (27.5)
17 (12.3)
12 (8.7)
8 (5.7)
17 (17.5)
14 (14.4)
12 (12.4)
17 (17.5)