Table 2.

 Estimated total incidence during the first wave of pandemic (H1N1) in Sukhbaatar city of Selenghe province, Mongolia

	Hemagglutinin inhibition (HI) test
Age‐groups (years)	Number tested	Number positive	Cumulative incidence (%)	95% CI for cumulative incidence	Total population	Estimated incidence	95% CI for estimated incidence
<1	23	7	30·4	15·4–51·1%	356	108	55–182
1	24	5	20·8	8·8–40·9%	384	80	34–157
2	50	24	48·0	34·8–61·5%	1008	484	351–620
5–9	34	14	41·2	26·3–57·8%	1919	790	506–1109
10–19	28	8	28·6	15·1–47·2%	4124	1178	621–1948
20–44	52	9	17·3	9·2–30·0%	9267	1604	848–2776
45–64	26	4	15·4	5·5–34·1%	3591	552	199–1226
65‐	27	5	18·5	7·7–37·2%	811	150	63–301
Total	264	76	28·8	23·7–34·5%	21460	4947	2676–8320
	Microneutralization (MN) test
<1	23	7	30·4	15·4–51·1%	356	108	55–182
1	24	7	29·2	14·7–49·4%	384	112	56–190
2	50	26	52·0	38·5–65·2%	1008	524	388–657
5–9	34	20	58·8	42·2–73·7%	1919	1129	810–1413
10–19	28	11	39·3	23·5–57·6%	4124	1620	970–2377
20–44	52	12	23·1	13·6–36·3%	9267	2139	1259–3362
45–64	26	5	19·2	8·0–38·3%	3591	691	289–1377
65‐	27	5	18·5	7·7–37·2%	811	150	63–301
Total	264	93	35·2	29·7–41·2%	21460	6473	3890–9859
	Both HI and MNT
<1	23	7	30·4	15·4–51·1%	356	108	55–182
1	24	5	20·8	8·8–40·9%	384	80	34–157
2	50	22	44·0	31·2–57·7%	1008	444	314–582
5–9	34	14	41·2	26·3–57·8%	1919	790	506–1109
10–19	28	7	25·0	12·4–43·6%	4124	1031	512–1799
20–44	52	7	13·5	6·4–25·6%	9267	1247	590–2371
45–64	26	2	7·7	1·0–25·3%	3591	276	37–907
65‐	27	2	7·4	1·0–24·5%	811	60	8–198
Total	264	66	25·0	20·1–30·6%	21460	4037	2055–7305