Table 3.

Risk ratios (RRs) and 95% confidence intervals (CIs) for the proportion of cultures positive for Typhi post-campaign (2011) vs. pre-campaign (2008–2010) in subdivisions with high pre-campaign incidence—Fiji, January 1–August 31, 2008–2011

	No. cultures yielding Typhi				No. cultures				% Cultures yielding Typhi				RR (2011 vs. 2008–10)
Subdivision	2008	2009	2010	2011	2008	2009	2010	2011	2008	2009	2010	2011	Estimate	95% CI
Taveuni*	38	49	22	7	237	279	196	168	16	18	11	4	0.27	0.13–0.57
Ra†‡	20	17	52	10	69	77	207	82	29	22	25	12	0.48	0.26–0.89
Cakaudrove†	72	5	23	24	196	50	241	86	37	10	10	28	1.36	0.93–1.99
Macuata§	54	43	31	48	2,464	2,606	2,059	1,719	2	2	2	3	1.56	1.12–2.16
Bua§¶	16	18	16	36	0	122	74	116	−	15	22	31	1.79	1.19–2.69

RR = risk ratio (bold RRs are statistically significant results); 95% CI = 95% confidence interval; “–” = value not calculated.

^*High vaccination (92% of the population vaccinated).

^†Mid-level vaccination (65% or 22% of the population vaccinated).

^§Low to no vaccination (0–9% of the population vaccinated).

^‡Missing January–March 2008 data.

^¶Missing January–August 2008 data.