Number of measles cases per week U.S. 2023-2026| ��ƽ��

Number of measles cases in the United States per week from 2023 to January 13, 2026

Characteristic	Number of cases
1/1/2023	0
1/8/2023	1
1/15/2023	1
1/22/2023	0
1/29/2023	0
2/5/2023	0
2/12/2023	0
2/19/2023	1
2/26/2023	0
3/5/2023	1
3/12/2023	1
3/19/2023	1
3/26/2023	1
4/2/2023	1
4/9/2023	2
4/16/2023	0
4/23/2023	0
4/30/2023	1
5/7/2023	0
5/14/2023	2
5/21/2023	2
5/28/2023	2
6/4/2023	1
6/11/2023	0
6/18/2023	0
6/25/2023	0
7/2/2023	0
7/9/2023	0
7/16/2023	0
7/23/2023	2
7/30/2023	0
8/6/2023	1
8/13/2023	0
8/20/2023	1
8/27/2023	0
9/3/2023	0
9/10/2023	3
9/17/2023	1
9/24/2023	5
10/1/2023	5
10/8/2023	1
10/15/2023	1
10/22/2023	0
10/29/2023	2
11/5/2023	1
11/12/2023	0
11/19/2023	0
11/26/2023	0
12/3/2023	2
12/10/2023	2
12/17/2023	3
12/24/2023	11
12/31/2023	4
1/7/2024	4
1/14/2024	2
1/21/2024	2
1/28/2024	5
2/4/2024	3
2/11/2024	14
2/18/2024	9
2/25/2024	6
3/3/2024	3
3/10/2024	12
3/17/2024	38
3/24/2024	9
3/31/2024	10
4/7/2024	4
4/14/2024	3
4/21/2024	4
4/28/2024	0
5/5/2024	4
5/12/2024	5
5/19/2024	5
5/26/2024	6
6/2/2024	0
6/9/2024	4
6/16/2024	4
6/23/2024	3
6/30/2024	7
7/7/2024	13
7/14/2024	11
7/21/2024	7
7/28/2024	12
8/4/2024	7
8/11/2024	9
8/18/2024	8
8/25/2024	11
9/1/2024	10
9/8/2024	3
9/15/2024	3
9/22/2024	1
9/29/2024	2
10/6/2024	1
10/13/2024	3
10/20/2024	1
10/27/2024	3
11/3/2024	4
11/10/2024	3
11/17/2024	0
11/24/2024	2
12/1/2024	0
12/8/2024	0
12/15/2024	0
12/22/2024	1
12/29/2024	2
1/5/2025	1
1/12/2025	1
1/19/2025	11
1/26/2025	19
2/2/2025	27
2/9/2025	65
2/16/2025	85
2/23/2025	75
3/2/2025	90
3/9/2025	84
3/16/2025	103
3/23/2025	91
3/30/2025	115
4/6/2025	74
4/13/2025	86
4/20/2025	48
4/27/2025	49
5/4/2025	35
5/11/2025	25
5/18/2025	55
5/25/2025	41
6/1/2025	24
6/8/2025	20
6/15/2025	29
6/22/2025	35
6/29/2025	18
7/6/2025	15
7/13/2025	13
7/20/2025	17
7/27/2025	13
8/3/2025	11
8/10/2025	21
8/17/2025	38
8/24/2025	36
8/31/2025	22
9/7/2025	28
9/14/2025	21
9/21/2025	18
9/28/2025	22
10/5/2025	21
10/12/2025	28
10/19/2025	35
10/26/2025	31
11/2/2025	41
11/9/2025	29
11/16/2025	53
11/23/2025	43
11/30/2025	69
12/7/2025	58
12/14/2025	56
12/21/2025	49
12/28/2025	146
1/4/2026	158
1/11/2026	13

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Release date

January 2026

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Region

United States

Survey time period

January 1, 2023 to January 13, 2026

Supplementary notes

2025–2026 case counts are preliminary and subject to change.

Citation formats

In the period from January 1, 2023, to January 13, 2026, the weeks starting from December 28, 2025, to January 10, 2026, had the highest number of measles cases, with 146 and 158 reported cases, respectively. 2025 was the year with the highest number of new measles cases in the U.S. since 1991.

Measles is a highly contagious disease that can be especially dangerous for young children. Vaccines against measles resulted in a significant decrease in cases in the United States over the last few decades; however, increasing vaccine hesitancy and skepticism have been blamed for recent outbreaks.