Table 1.

Number and proportion of migratory cases of 44 notifiable infectious diseases in the mainland of China during 2016–2020.

Ranka	Disease	Total number of cases	Migratory cases		Type of migration
			Number	Proportionb	Intra-province	Inter-province	From abroad
1	Hepatitis B	5,136,056	771,423	15.02%	561,274	205,884	4265
2	Tuberculosis	3,999,387	469,204	11.73%	342,723	123,171	3310
3	Hand-foot-and-mouth disease	9,409,017	349,092	3.71%	245,308	97,264	6520
4	Syphilis	2,447,645	310,715	12.69%	189,334	117,416	3965
5	Influenza	6,230,343	218,749	3.51%	134,005	67,619	17,125
6	Hepatitis C	1,109,374	144,945	13.07%	105,008	36,796	3141
7	HIV/AIDS	803,553	138,995	17.30%	68,967	53,926	16,102
8	Gonorrhea	612,682	77,938	12.72%	38,433	37,835	1670
9	Brucellosis	220,077	39,271	17.84%	29,793	9405	73
10	Mumps	1,117,231	26,739	2.39%	18,327	7477	935
11	Hepatitis E	133,935	22,049	16.46%	16,221	5634	194
12	Pertussis	72,710	18,243	25.09%	12,244	5956	43
13	Malariad	12,632	12,630	99.98%	0	0	12,630
14	Shigellosis	458,685	11,606	2.53%	6566	4542	498
15	Hepatitis A	91,265	10,893	11.94%	8248	2460	185
16	Hemorrhagic fever with renal syndrome	49,844	9903	19.87%	8306	1582	15
17	Scarlet fever	311,635	9260	2.97%	5794	2976	490
18	Hydatid disease	23,578	8934	37.89%	7567	1355	12
19	Measles	38,999	6250	16.03%	4666	1340	244
20	Dengue	37,993	4251	11.19%	1789	516	1946
21	Typhoid	37,969	3291	8.67%	2428	770	93
22	Acute hemorrhagic conjunctivitis	177,229	2396	1.35%	1491	798	107
23	Japanese encephalitis	4926	2004	40.68%	1460	504	40
24	Rubella	44,820	1702	3.80%	1190	470	42
25	Paratyphoid	11,062	963	8.71%	737	202	24
26	Kala-azar	1076	537	49.91%	407	129	1
27	Rabies	2084	484	23.22%	364	117	3
28	Amoebic dysentery	4690	470	10.02%	336	115	19
29	Typhus	5329	429	8.05%	357	56	16
30	Leprosy	2201	404	18.36%	304	97	3
31	Schistosomiasis	6958	202	2.90%	169	30	3
32	Anthrax	1549	188	12.14%	157	31	0
33	Hepatitis D	1734	188	10.84%	146	40	2
34	Avian flu H7N9	864	166	19.21%	120	46	0
35	Leptospirosis	1225	160	13.06%	133	27	0
36	Epidemic cerebrospinal meningitis	489	121	24.74%	96	21	4
37	Neonatal tetanus	457	88	19.26%	63	24	1
38	Plaguec	12	5	42%	2	3	0
39	Cholera	96	4	4%	1	3	0
40	Diphtheriac	2	0	0%	0	0	0
41	Avian flu H5N1c	1	0	0%	0	0	0
42	Filariasis	0	0	–	0	0	0
43	Poliomyelitis	0	0	–	0	0	0
44	Severe acute respiratory syndrome	0	0	–	0	0	0
Total		32,621,414	2,674,892	8.20%	1,814,534	786,637	73,721

^aRanked by the disease specific number of migratory cases.

^bProportion of migratory cases in all reported cases for each specific notifiable infectious disease.

^cThe migratory proportion of diseases with few cases (≤20 cases) might not be reliable.

^dThe last indigenous malaria case was reported on March 17, 2016 in Yingjiang County, Yunnan Province, China. “–” indicates that the total number of reported cases is 0.