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Sexually Transmitted Diseases by State – 2019

A state by state breakdown of sexually transmitted diseases

Sexually transmitted diseases are on the rise in the United States. Chlamydia, gonorrhea and syphilis have all drastically increased. Chlamydia saw a 22 percent increase from 2014 to 2017, gonorrhea rose 67 percent, and syphilis 76 percent.

We wanted to know which states had the highest rates of each of the STDs. Data was pulled from the most recent STD Surveillance Report done in 2017 by the Centers for Disease Control and Prevention. The CDC's surveillance report gathers its information from various sources including state and local STD programs and surveillance networks.

We selected the four most commonly diagnosed sexually transmitted diseases the CDC monitors which are: gonorrhea, chlamydia, primary and secondary syphilis, and congenital syphilis. Congenital syphilis is diagnosed in infants when a pregnant mother passes syphilis to her baby. We looked at cases, populations, and rankings for all four infections in all 50 states.

Chlamydia statistics

Alarms Heat map State Chlamydia

Chlamydia is the most commonly diagnosed sexually transmitted disease in the United States. It is a bacterial infection known as the silent epidemic for women since symptoms don't manifest in many cases for several months and can lead to fertility problems.

Since states with the highest populations have the most cases, we figured the infection rate per 100,000 people.

States with the highest rate of infection:

  1. Alaska (nearly 800 cases per capita)
  2. Louisiana (742)
  3. Mississippi (707)
  4. New Mexico (651)
  5. South Carolina (649)

States with the lowest rate of infection:

  1. West Virginia
  2. Vermont
  3. New Hampshire
  4. Utah
  5. Maine

State chlamydia rate per 100k

RankStateCasesRate Per 100K
1Alaska5,934799.8
2Louisiana34,756742.4
3Mississippi21,149707.6
4New Mexico13,560651.6
5South Carolina32,235649.8
6Georgia65,104631.4
7North Carolina62,876619.7
8Alabama29,935615.5
9New York116,814591.6
10Illinois75,518589.9
11Arkansas17,320579.6
12Arizona39,598571.3
13Delaware5,392566.3
14California218,785557.4
15Maryland33,416555.4
16Oklahoma21,752554.4
17Nevada16,260553.1
18Texas151,533543.9
19Missouri32,683536.4
20Ohio61,389528.6
21Tennessee35,087527.5
22Indiana34,278516.8
23South Dakota4,437512.7
24Michigan50,595509.6
25Virginia42,374503.7
26Rhode Island5,282500
27Connecticut17,750496.3
28Colorado26,995487.2
29Florida100,018485.2
30Wisconsin27,740480
31Hawaii6,850479.5
32Kansas13,554466.2
33Oregon18,634455.2
34Nebraska8,595450.7
35Iowa13,893443.2
36Washington32,231442.2
37Pennsylvania56,447441.5
38Montana4,560437.4
39Kentucky19,320435.4
40North Dakota3,278432.5
41Massachusetts29,315430.4
42Minnesota23,539426.4
43New Jersey35,239394
44Idaho6,200368.4
45Wyoming2,142365.8
46Maine4,555342.1
47Utah10,135332.2
48New Hampshire4,412330.5
49Vermont1,858297.5
50West Virginia4,140226.1

Gonorrhea statistics

Gonorrhea is an infection caused by the bacterium Neisseria gonorrhoeae. The CDC is particularly concerned with gonorrhea, as the strain has become antibiotic resistant and doctors are running out of ways to treat it.

States with the highest rate of infection (per 100,000 people):

  1. Mississippi (300)
  2. Alaska (295.1)
  3. Louisiana (256.7)
  4. South Carolina (254.4)
  5. Alabama (245.7)

​States with the lowest rate of infection (per 100,000 people):

  1. Vermont
  2. New Hampshire
  3. Maine
  4. Idaho
  5. Wyoming

State gonorrhea rate per 100k

RankStateCasesRate Per 100K
1Mississippi9,258309.8
2Alaska2,189295.1
3Louisiana12,017256.7
4South Carolina12,623254.4
5Alabama11,948245.7
6Oklahoma9,081231.4
7North Carolina22,871225.4
8Arkansas6,710224.5
9Georgia22,667219.8
10New Mexico4,489215.7
11Missouri13,086214.8
12Ohio23,967206.4
13California75,348192
14Nevada5,520187.8
15Delaware1,784187.4
16Tennessee12,426186.8
17Illinois23,859186.4
18Maryland10,978182.5
19Arizona12,502180.4
20Indiana11,835178.4
21NewYork34,099172.7
22Texas47,409170.2
23Kentucky7,417167.2
24Michigan15,742158.6
25Kansas4,545156.3
26Florida31,683153.7
27Colorado8,478153
28Virginia12,596149.7
29South Dakota1,290149.1
30Nebraska2,653139.1
31Washington9,915136
32Wisconsin7,661132.6
33North Dakota966127.4
34Oregon5,022122.7
35Iowa3,758119.9
36Pennsylvania15,244119.2
37Minnesota6,519118.1
38Massachusetts7,737113.6
39Connecticut3,913109.4
40New Jersey9,439105.5
41Rhode Island1,087102.9
42Hawaii1,35895.1
43Utah2,54383.3
44Montana78275
45West Virginia1,29670.8
46Wyoming41270.4
47Idaho98758.6
48Maine62046.6
49New Hampshire51338.4
50Vermont20332.5

Syphilis statistics

Alarms Heat map State Primary and Secondary Syphilis

Syphilis is a deadly bacterial infection with four stages: primary, secondary, latent, and tertiary. The CDC's numbers focus on primary and secondary infections, as most patients in the United States are treated before it reaches the final two stages. In the early 2000s, it reached historically low levels and there were hopes the disease would be eradicated. However, it has consistently risen since then.

States with the highest rate of infection (per 100,000 people) are:

  1. Louisiana (93)
  2. Nevada (57.9)
  3. California (57.5)
  4. Texas (44.2)
  5. Florida (41.3)

States with the lowest rate of infection (per 100,000 people) include:

  1. Wyoming
  2. Alaska
  3. Vermont
  4. Nebraska
  5. Wisconsin

State primary and secondary syphilis rate per 100k

RankStateCasesRate Per 100K
1Nevada58720
2California6,70817.1
3Louisiana67914.5
4Georgia1,48914.4
5Arizona94313.6
6NewYork2,35511.9
7Florida2,39011.6
8North Carolina1,13811.2
9Mississippi31010.4
10Illinois1,2259.6
11Maryland5739.5
12Oklahoma3739.5
13Washington6779.3
14New Mexico1939.3
15Alabama4248.7
16Oregon3528.6
17Missouri5078.3
18Texas2,2338
19Massachusetts5387.9
20Arkansas2347.8
21Tennessee4887.3
22South Carolina3617.3
23Ohio8327.2
24Rhode Island716.7
25Hawaii946.6
26Virginia5366.4
27Pennsylvania7936.2
28Delaware576
29Kentucky2625.9
30North Dakota445.8
31New Jersey4995.6
32Minnesota2925.3
33Colorado2925.3
34Maine654.9
35Michigan4804.8
36Indiana3194.8
37Montana484.6
38Kansas1334.6
39Utah1173.8
40South Dakota333.8
41Idaho643.8
42West Virginia623.4
43Iowa1013.2
44New Hampshire433.2
45Connecticut1103.1
46Wisconsin1733
47Nebraska432.3
48Vermont132.1
49Alaska131.8
50Wyoming40.7

Congenital syphilis statistics

Congenital syphilis is a truly tragic and heartbreaking illness. It is syphilis that is passed from mother to infant. The disease has seen a 154 percent increase since 2013. Nearly half of all children infected while in the womb do not survive.

The U.S. Preventive Services Taskforce now recommends all pregnant mothers are tested for syphilis at their first prenatal screening. Antibiotics can prevent the mother from passing the disease on to their newborn.

States with the highest rate of congenital syphilis (per 100,000 people) are:

  1. Louisiana
  2. Nevada
  3. California
  4. Texas
  5. Florida

Summary

The Centers for Disease Control and Prevention is fighting an uphill battle trying to get STD rates back down to where they were in the early 2000s. Last year, the CDC announced $92.5 million in grants were available for state and city health departments to strengthen STD prevention and control programs. The money can be used to conduct STD surveillance, respond to outbreaks and promote CDC recommended awareness campaigns, screening, diagnosis and treatment. Money was given to communities in all 50 states as well as Puerto Rico and the Virgin Islands.

Overall score

To find a state's overall score, we took an average of their rankings. The lower the score the higher rate of STDs in that state. States with the highest rate of STDs are Louisiana (2.3), Georgia (7.3), North Carolina (7.8), California (8.0) and Nevada (8.5). Vermont has the lowest score of 47.8, followed by Wyoming and New Hampshire at 46.3, Idaho at 44 and Utah at 43.3. While Alaska has high rankings per capita with gonorrhea and chlamydia, it has extremely low syphilis rankings and no cases of congenital syphilis, bringing its score down to 24.

Methodology

Data was pulled from the 2017 STD Surveillance Report done by the Centers for Disease Control and Prevention. Since population density affects the number of cases in each state, case numbers were put through a per capita equation to represent the number of cases per 100,000. The overall rankings were figured by taking an average of a state’s individual rankings for gonorrhea, chlamydia, primary and secondary syphilis and congenital syphilis. Congenital syphilis is when the disease is passed from mother to infant but is still considered an STD by the CDC. Congenital syphilis was omitted when figuring the percentages of each state's population with STDs. The CDC draws its data from three sources: notifiable disease reporting from state and local STD programs, projects that monitor STD positivity and prevalence and national surveys and other data collection systems implemented by federal and private organizations. A new STD Surveillance Report should come out this year to show statistics for 2018.

Alarms Heat mapSTD avg

Average STD State Rank

StateAverage STD State Rank
Louisiana2.3
Georgia7.3
North Carolina7.8
California8.0
Nevada8.5
Arizona10.5
South Carolina11.0
Arkansas11.8
Alabama12.5
Oklahoma12.5
Mississippi12.5
Illinois12.8
Maryland12.8
Missouri15.5
Texas15.5
New Mexico15.5
New York16.0
Florida16.8
Ohio18.0
Tennessee19.3
Oregon23.5
Alaska24.0
Virginia24.8
Delaware25.0
Indiana25.3
Michigan27.0
Washington27.3
Hawaii27.5
Kentucky28.8
Colorado29.5
South Dakota29.5
NewJersey33.0
Pennsylvania33.3
Rhode Island33.8
Kansas34.8
Wisconsin35.0
Massachusetts35.5
Iowa36.0
Nebraska36.5
Montana36.5
North Dakota36.8
Minnesota36.8
Connecticut38.8
West Virginia39.5
Maine43.0
Utah43.3
Idaho44.0
Wyoming46.3
New Hampshire46.3
Vermont47.8
Alarms Heat map STD 100k

State STD rate per 100k

RankStateSTD rate per 100k
1Alaska1394.01
2Mississippi1283.61
3Louisiana1261.89
4South Carolina1100.19
5New Mexico1084.56
6Georgia1069.02
7Alabama1065.10
8North Carolina1037.17
9Arkansas1003.45
10Oklahoma997.21
11Illinois966.11
12California939.84
13Arizona936.62
14New York933.96
15Missouri932.31
16Nevada920.53
17Delaware912.67
18Maryland910.90
19Texas907.64
20Ohio905.73
21Tennessee878.02
22Indiana865.52
23South Dakota834.44
24Michigan816.78
25Virginia802.15
26Kansas786.33
27Colorado784.57
28Florida765.61
29Wisconsin750.56
30Kentucky747.37
31Nebraska742.22
32Connecticut728.97
33Rhode Island723.32
34Hawaii710.90
35Washington710.31
36North Dakota706.76
37Oregon702.62
38Iowa699.49
39Pennsylvania683.07
40Minnesota675.45
41Massachusetts655.02
42Montana627.23
43New Jersey612.37
44Wyoming552.94
45Utah549.63
46Idaho537.33
47Maine464.42
48New Hampshire438.19
49Vermont393.73
50West Virginia365.11
Alarms Heat map percentage of population with an STD

State percentage of population with an STD

RankStatePercentage of population with an STD
1Alaska1.39
2Mississippi1.28
3Louisiana1.26
4South Carolina1.1
5New Mexico1.08
6Alabama1.07
7Georgia1.07
8North Carolina1.04
9Arkansas1
10Oklahoma1
11Illinois0.97
12Arizona0.94
13California0.94
14Missouri0.93
15New York0.93
16Nevada0.92
17Delaware0.91
18Maryland0.91
19Ohio0.91
20Texas0.91
21Tennessee0.88
22Indiana0.87
23South Dakota0.83
24Michigan0.82
25Virginia0.8
26Kansas0.79
27Colorado0.78
28Florida0.77
29Kentucky0.75
30Wisconsin0.75
31Nebraska0.74
32Connecticut0.73
33Rhode Island0.72
34Hawaii0.71
35North Dakota0.71
36Washington0.71
37Iowa0.7
38Oregon0.7
39Minnesota0.68
40Pennsylvania0.68
41Massachusetts0.66
42Montana0.63
43New Jersey0.61
44Utah0.55
45Wyoming0.55
46Idaho0.54
47Maine0.46
48New Hampshire0.44
49Vermont0.39
50West Virginia0.37