Table 1.

Characteristics, demographics, and recovery of SARS-CoV-2 lineages from white-tailed deer screened for the presence of SARS-CoV-2 in Iowa

	Negative samples (N)	Positive samples (N)	Total samples (N)	Proportion/prevalence (%) (95% CI)
Month
April 2020	7		7
May 2020	4		4
June 2020	4		4
August 2020	2		2
September 2020	37	2	39	5.13 (1.42–16.9)
October 2020	66	4	70	5.71 (2.24–13.8)
November 2020	55	22	77	28.6 (19.7–39.5)
December 2020	14	61	75	81.3 (71.1–88.5)
January 2021	0	5	5	100 (56.6–100)
Total	189	94	283	33.2 (28.0–38.9)
Sex
Male (M)		59	179	33.0 (26.1–39.9)*
Female (F)		35	103	34.0 (24.8–43.1)*
Unknown			1
Total		94	283	33.2 (28.0–38.9)
Age
Adult (A)		82	250	32.8 (26.9–38.6)†
Yearling (Y)		12	32	37.5 (20.7–54.3)†
Fawn			1
Total		94	283	33.2 (28.0–38.9)
Status
Captive (C)		27	131	20.6 (13.7–27.5)‡
Free living (FL)		67	152	44.1 (36.1–51.8)‡
Total		94	283	33.2 (28.0–38.9)
County
Allamakee		11	11	100 (74.1–100)
Jasper		4	4	100 (51.0–100)
Polk		6	7	85.7 (48.7–97.4)
Appanoose		21	28	75 (56.6–87.3)
Fayette		6	10	60 (31.3–83.2)
Jefferson		4	8	50 (21.5–78.5)
Woodbury		13	46	28.3 (17.3–42.6)
Pottawattamie		5	22	22.8 (10.1–43.4)
Des Moines		23	112	20.5 (1.5–28.9)
Dubuque		1	12	8.3 (1.5–35.4)
Black Hawk			9	0
Dickinson			1	0
Henry			6	0
Jackson			3	0
Keokuk			1	0
Van Buren			1	0
Washington			1	0
Webster			1	0
Total		94	283	33.2 (28.0–38.9)
Lineage
B.1		7		7.5 (3.7–14.6)
B.1.1		1
B.1.119		2
B.1.2		51		54.2 (44.2–64.0)
B.1.234		6		6.4 (3.0–13.2)
B.1.240		1
B.1.264		1
B.1.311		19		20.2 (13.3–29.4)
B.1.362		2
B.1.400		2
B.1.459		1
B.1.596		1
Total		94

^*P = 0.86 (M, F).

^†P = 0.59 (A, Y).

^‡P < 0.0001 (C, FL).