Table 2. Estimated hepatitis C virus (HCV) seroprevalence and prevalence of chronic HCV infection, and estimated number HCV seropositive and chronically infected, in the adult population in Ireland, by age and sex and Health Service Executive-area, Ireland, 2014–2016.

Group		Seropositive in study sample (chronic and resolved infections)			Seropositive adults in general population		Chronically infected adults in study sample			Chronically infected adults in general population
		Number	Weighted prevalence (%)	95% CI	Number	95% CI	Number	Weighted prevalence (%)	95% CI	Number	95% CI
Sex	Female	14	0.42	0.25–0.71	7,370	4,387–12,458	8	0.24	0.12–0.49	4211	2,106–8,598
	Male	39	1.57	1.12–2.19	26,453	18,871–36,900	25	0.91	0.61–1.37	15333	10,278–23,083
Age	18–29 years	1	0.07	0.01–0.47	541	77–3,630	0	0	0	0	0
	30–39 years	20	1.94	1.21–3.10	14,709	9,174–23,504	12	1.07	0.59–1.95	8113	4,473–14,785
	40–49 years	18	1.53	0.96–2.43	9,731	6,106–15,455	13	1.11	0.64–1.91	7060	4,070–12,148
	50–59 years	6	0.83	0.33–2.09	4,307	1,712–10,845	3	0.30	0.10–0.94	1557	519–4,878
	60–69 years	5	0.69	0.29–1.66	2,708	1,138–6,514	2	0.27	0.07–1.09	1060	275–4,277
	70 + years	3	0.50	0.16–1.57	1,809	579–5,680	3	0.50	0.16–1.57	1809	579–5,680
Area	HSE E	47	2.13	1.60–2.83	26,345	19,790–35,003	31	1.41	0.99–2.01	17440	12,245–24,861
	HSE M+NE	2	0.31	0.08–1.22	1,620	418–6,374	1	0.15	0.02–1.08	784	104–5,643
	HSE S + SE	3	0.48	0.15–1.47	4,173	1,304–12,779	1	0.16	0.02–1.12	1391	174–9,736
	HSE W + NW + MW	1	0.21	0.03–1.45	1,703	243–11,758	0	0	0	0	0
All	Population 18 + years	53	0.98	0.73–1.31	33,708	25,109–45,058	33	0.57	0.40–0.81	19,606	13,758–27,860

CI: confidence interval; E: East; HCV: hepatitis C virus; HSE: Health Service Executive; M: Midlands; MW: Mid West; NE: North East; NW: North West; S: South; SE: South East; W: West.