Table 1. Distribution of plague cases in humans in the natural plague focus of Meriones unguiculatus on the Inner Mongolian Plateau from 1950 to 2019.

Year	County	Number of cases
1954	Hangjinhou	8
1970	Sunitezuo	1
1970	Wulatezhong	1
1972	Shangdu	1
1986	Wulateqian	2
1987	Etuokeqian	2
1991	Siziwang	1
2004	Suniteyou	1
2019	Sunitezuo	2
2019	Siziwang	1
2019	Xianghuang	1