Summary Chlamydia resulted in 160 000 global DALYs (95% UI 114 000–223 000) in 2019, accounting for 2·1% (0·9–4·4) of DALYs from all sexually transmitted infections excluding HIV.

Definition Chlamydia is a sexually transmitted infection caused by the Chlamydia trachomatis bacteria. Severe infections can lead to epididymo-orchitis in males or pelvic inflammatory disease in females, which can lead to female infertility.

Total sources
Incidence 1030
Prevalence 269
Remission 0
Causes of death 2613
Other 19
Table 1: Total sources used in GBD 2019 estimation
What is new in GBD 2019?
  • •Adjustments for alternative diagnostic methods and case-definitions were applied to data prior to analysis in DisMod-MR. Validation studies comparing the number of cases identified by PCR, wet mount, or culture diagnostic tests were used to develop adjustment factors.
  • •Adult deaths due to STI were split into syphilis, gonorrhoea, chlamydia, and other STI using proportions specific to age, sex, and super-region. In previous GBD cycles, these proportions were only estimated at the global level.
Prevalence
Incidence
Deaths
YLLs
YLDs
DALYs
Cases
(millions)
Rate (per 100 000)
Cases
(millions)
Rate (per 100 000)
Deaths
(millions)
Rate (per 100 000)
YLLs
(millions)
Rate (per 100 000)
YLDs
(millions)
Rate (per 100 000)
DALYs
(millions)
Rate (per 100 000)
2019
Both Sexes
151
(115
to 195)
1871·8
(1422·2
to 2423·7)
233
(174
to 303)
2883·9
(2161·2
to 3762·8)
0·000972
(0·000757
to 0·00111)
0·0
(0·0
to 0·0)
0·0352
(0·0273
to 0·0406)
0·4
(0·3
to 0·5)
0·124
(0·0788
to 0·189)
1·5
(1·0
to 2·3)
0·160
(0·114
to 0·223)
2·0
(1·4
to 2·8)
Females
94·5
(72·8
to 122)
2365·5
(1824·6
to 3038·4)
107
(81·0
to 139)
2677·3
(2027·5
to 3505·4)
0·000972
(0·000757
to 0·00111)
0·0
(0·0
to 0·0)
0·0352
(0·0273
to 0·0406)
0·9
(0·7
to 1·0)
0·0646
(0·0381
to 0·104)
1·6
(1·0
to 2·6)
0·0998
(0·0727
to 0·139)
2·5
(1·8
to 3·5)
Males
56·4
(41·9
to 73·9)
1386·7
(1027·0
to 1813·2)
126
(93·2
to 165)
3088·1
(2286·9
to 4039·3)
0
(0
to 0)
0·0
(0·0
to 0·0)
0
(0
to 0)
0·0
(0·0
to 0·0)
0·0599
(0·0364
to 0·0935)
1·5
(0·9
to 2·3)
0·0599
(0·0364
to 0·0935)
1·5
(0·9
to 2·3)
Percentage change 2010-19
Both Sexes
14·5%
(11·6
to 17·4)
4·6%
(2·7
to 6·3)
14·2%
(11·3
to 16·9)
4·2%
(2·6
to 5·8)
8·7%
(–3·1
to 22·4)
–9·0%
(–18·4
to 2·2)
1·4%
(–11·0
to 15·7)
–10·3%
(–21·0
to 2·0)
12·6%
(9·0
to 16·0)
2·8%
(–0·2
to 5·7)
9·9%
(5·4
to 14·2)
–0·4%
(–4·3
to 3·4)
Females
15·5%
(12·0
to 19·0)
5·8%
(3·6
to 8·1)
15·6%
(12·0
to 19·4)
6·0%
(3·6
to 8·3)
8·7%
(–3·1
to 22·4)
–8·8%
(–18·6
to 2·7)
1·4%
(–11·0
to 15·7)
–10·2%
(–20·9
to 2·2)
11·5%
(6·9
to 16·2)
2·2%
(–2·0
to 6·5)
7·7%
(1·5
to 13·9)
–2·5%
(–8·2
to 3·1)
Males
12·9%
(10·5
to 15·0)
2·6%
(1·3
to 3·8)
13·0%
(10·7
to 15·2)
2·7%
(1·4
to 3·9)
-–
-–
-–
-–
13·8%
(8·6
to 18·8)
3·5%
(–0·6
to 7·7)
13·8%
(8·6
to 18·8)
3·5%
(–0·6
to 7·7)
Numbers in parentheses are 95% uncertainty intervals.
Table 2: Global prevalence, incidence, deaths, YLLs, YLDs, and DALYs in counts and age-standardised rates for both sexes combined, females, and males, 2019, with percentage change between 2010 and 2019
Deaths YLLs YLDs DALYs
1990 208th 209th 210th 273rd
2010 210th 212th 212th 274th
2019 211th 213th 214th 272nd
Table 3: Rank among most detailed causes for global deaths, YLLs, YLDs, and DALYs in 1990, 2010, and 2019, for both sexes combined
Figure 1: Composition of DALYs by YLLs and constituent sequelae YLDs for both sexes combined, 2019
Figure 2: Percentage of DALYs attributable to top risk factors for both sexes combined, 2019
No Legend
Figure 3: Age-standardised DALY rates for each location by SDI, both sexes combined, 2019
Figure 4: Composition of DALYs by YLLs and YLDs, age group, and sex, 2019
No Legend
Figure 5: Age-standardised DALY rates (per 100 000) by location, both sexes combined, 2019