Table 5.

Household Secondary Attack Rates by Household Contact Sex

		Household Secondary Attack Rate, % (95% Confidence Interval)
		By household contact sex
Study	Sample Size	Female	Male
Jing et al [11] (Guangzhou, China)	538	18.9 (14.5–24.0)	15.5 (11.3–20.5)
Li et al [5] (Wuhan, China)	392	17.1 (11.9–23.4)	15.6 (11.0–21.3)
Yung et al [18] (Singapore)	212	5.0 (1.6–11.2)a	7.1 (3.1–13.6)a
Yousaf et al [24] (Milwaukee and Salt Lake City, USA)	198	29.3 (20.6–39.3)	18.8 (11.5–28.0)
Wu et al [8] (Zhuhai, China)	143	36.3 (24.6–49.7)	30.2 (18.5–45.1)
Xin et al [13] (Qingdao, China)	106	21.6 (11.3–35.3)	14.5 (6.5–26.7)

Exact binomial confidence intervals were computed for estimates reported without uncertainty.

^a0–16 years.