Table S2. No. of China Disease Surveillance Point system registries from 1990 to 2020.

Year	Rural	Urban	Total	Province	Rural included	Urban included	Total included
Data source: https://ncncd.chinacdc.cn/xzzq_1/202101/t20210111_223706.htm. Provinces: Hong Kong and Macao Special Administrative Regions, and Taiwan province are not included.
1990−2003	85	41	145	31	−	−	−
2004	97	64	161	31	97	61	158
2005	97	64	161	31	97	61	158
2006	97	64	161	31	91	55	146
2007	97	64	161	31	96	60	156
2008	97	64	161	31	97	61	158
2009	97	64	161	31	97	60	157
2010	97	64	161	31	97	63	160
2011	97	64	161	31	97	58	155
2012	97	64	161	31	96	57	153
2013	398	207	605	31	315	117	432
2014	97	64	161	31	350	141	491
2015	401	204	605	31	346	141	487
2016	401	204	605	31	351	148	499
2017	401	204	605	31	355	154	509
2018	399	206	605	31	357	155	512
2019	396	209	605	31	362	157	519
2020	396	209	605	31	361	161	522