Table 1. Demographics, clinical symptoms and laboratory data across patient series.

Criteria	Number of Patient Series (from 89)	Number / total number of patients	Median Value Across Patient Series (range)
Age	14	1684	29 years (22–37) (22.0–34.5)
Sex	65	12,171/13,369	100% Male (51.3–100)
Symptoms
Duration of Fever	25	3927	14.4 days (9–19)
Headache	29	3,805/4,251	100% (71.0–100)
Conjunctival Congestion	22	1,860/2,765	69.3% (10.2–100)
Myalgia	13	1,051/2,417	56.1% (2.2–100)
Cough	28	1,706/3,869	50% (5.1–100)
Pharyngitis	12	598/1,301	37.0% (1.9–100)
Deafness	23	756/4,020	25.0% (0.0–74.4)
Abdominal Pain	11	155/825	14.3% (2.8–80.4)
Delirium	24	293/2,983	12.6% (0.0–56.9)
Nausea or vomiting	10	131/1,738	8.4% (2.4–43.8)
Bleeding (Inc. epistaxis)	14	150/1,828	6.2% (1.0–55.6)
Meningitis	19	141/2,925	5.5% (0.0–15.8)
Signs
Lymphadenopathy	41	6,289/7,534	84.7% (20.0–100)
Rash	51	3,526/7078	44.9% (0–100)
Eschar	57	4,810/9,017	37.7% (0–100%)
Splenomegaly	25	1,103/3,051	35.0% (0.0–95.5)
Pneumonitis	27	1,655/4,673	33.9% (2.3–68.0)
Hepatomegaly	7	200/836	14.3% (6.4–93.5)
Pneumonia	28	286/3,907	7.8% (1.0–38.1)
Myocarditis	6	58/906	4.3% (1.0–39.2)
Jaundice	6	120/1,823	1.9% (0.0–3.1)
Blood Laboratory Results
White blood cells per microlitre	18	1,180	6,450 (5,000–12,000)
“Raised Urea” *	3	37/176	18.9 (0.0–24.8)

* Definition of raised urea ranged from >8.9mmol/L to 21.4mmol/L.