Table 1 Baseline characteristics of pregnant women with rash and suspected ZIKV infection from the cohort of Goiânia, Goiás, Brazil, 2017–2019.

Entry year in the cohort

2017

31/81 (38.3)

29/43 (67.4)

2/38 (5.3)

2018

48/81 (59.3)

14/43 (32.6)

34/38 (89.4)

2019

2/81 (2.4)

2/38 (5.3)

Age (years)

Mean (SD)

26.4 (5.8)

25.8 (5.9)

27.0 (5.7)

Schooling

≤ 9 years

20/81 (24.7)

8/43 (18.6)

12/38 (31.6)

> 9 years

61/81 (75.3)

35/43 (81.4)

26/38 (68.4)

Family income

≤ 2 minimum wage

27/73 (37.0)

14/38 (36.8)

13/35 (37.1)

> 2 minimum wage

46/73 (63.0)

24/38 (63.2)

22/35 (62.9)

Race/ethnicity

White

34/81 (42.0)

16/43 (37.2)

18/38 (47.4)

Black

5/81 (6.2)

1/43 (2.3)

4/38 (10.5)

Parda (Brown)

42/81 (51.9)

26/43 (60.5)

16/38 (42.1)

Obstetrical background

First pregnancy

29/81 (35.8)

17/43 (39.5)

12/38 (31.6)

Previous abortion

12/40 (30.0)

6/22 (27.3)

6/18 (33.3)

Previous stillborn

4 (10.8)

2/21 (9.5)

2/16 (12.5)

Type of pregnancy^a

Single

68/71 (95.8)

40/43 (93.0)

28/28 (100.0)

Twin

3/71 (4.2)

3/43 (7.0)

0/28 (0)

Trimester of ZIKV infection

1st trimester (≤ 13 weeks)

27/80 (33.7)

15/43 (34.9)

12/37 (32.4)

2nd trimester (> 13 to ≤ 28 weeks)

29/80 (36.3)

19/43 (44.2)

10/37 (27.0)

3rd trimester (≥ 29 weeks)

24/80 (30.0)

9/43 (20.9)

15/37 (40.6)

Signs and symptoms of exanthematic disease

N=72

n=39

n=33

Rash (days), median (IQR)

4 (3.0–7.0)

3 (3.0–6.0)

5 (3.5–7.0)

Pruritus

51/81 (63.0)

27/43 (62.9)

24/38 (63.2)

Headache

50/81 (61.7)

26/43 (60.5)

24/38 (63.2)

Prostration

42/81 (51.9)

25/43 (58.1)

17/38 (44.7)

Arthralgia

42/81 (51.9)

23/43 (53.6)

19/38 (50.0)

Myalgia

41/81 (50.6)

22/43 (51.2)

19/38 (50.0)

Fever

37/79 (46.8)

16/41 (39.0)

21/38 (55.3)

Retro-orbital pain

27/81 (33.3)

15/43 (34.9)

12/38 (31.6)

Photophobia

23/81 (28.4)

15/43 (34.9)

8/38 (21.1)

Upper respiratory

21/81 (25.9)

11/43 (25.6)

10/38 (26.3)

Conjunctival hyperemia

13/81 (16.0)

10/43 (53.1)

3/38 (7.9)