488.9
2023 (latest)
CHLAMYDIA
reported cases per 100,000 population · 1985–2023 · lower is better · NCHS Health, United States (Table IDNotif) · CDC NNDSS annual summary via WONDER
17.42
1985
552.8
high · 2019
17.42
low · 1985
+2707%
since 1985
┊ dashed lines mark 1987 Black Monday crash · 1991 Gulf War recession · 2001 Dot-com bust & 9/11 · 2008 Global financial crisis · 2020 COVID-19 pandemic
Method & caveats. Annual reported chlamydia incidence from NCHS and CDC NNDSS. National notification is specified from 1995 in the dispatch; IDNotif itself says not notifiable before 1994 and includes 1994. NAAT adoption increased detection sensitivity during the 2000s. Rates through 2019 are NCHS's; rates from 2020 are the NNDSS final count divided by the Census July 1 resident population (FRED POPTHM), using a later population vintage (about 1% higher denominator). This is not always the same construction: IDNotif excludes populations of jurisdictions where a disease was not notifiable or data were unavailable; STD rates before 1991 use civilian population. Selected years before 1988 are not interpolated.
Sources
Every value on this page is read from the publisher below. Current and historical source documents:
- https://ftp.cdc.gov/pub/Health_Statistics/NCHS/Publications/Health_US/hus20-21tables/IDNotif.xlsx
- https://wonder.cdc.gov/nndss-annual-summary.html
- https://fred.stlouisfed.org/series/POPTHM
- https://github.com/danielmiessler/substrate/tree/main/Data/US-Disease-And-Vaccination
Data
| Year | Chlamydia | Change |
|---|---|---|
| 2023 | 488.9 | −1% |
| 2022 | 493.3 | +2% |
| 2021 | 485.4 | +2% |
| 2020 | 476.1 | −14% |
| 2019 | 552.8 | +3% |
| 2018 | 537.5 | +2% |
| 2017 | 524.5 | +6% |
| 2016 | 494.6 | +4% |
| 2015 | 475.0 | +5% |
| 2014 | 452.2 | +2% |
| 2013 | 443.5 | −2% |
| 2012 | 453.3 | −0% |
| 2011 | 453.4 | +7% |
| 2010 | 423.6 | +5% |
| 2009 | 405.3 | +2% |
| 2008 | 398.1 | +8% |
| 2007 | 367.5 | +7% |
| 2006 | 344.3 | +5% |
| 2005 | 329.4 | +4% |
| 2004 | 316.5 | +5% |
| 2003 | 301.7 | +4% |
| 2002 | 289.4 | +5% |
| 2001 | 274.5 | +9% |
| 2000 | 251.4 | +2% |
| 1999 | 247.2 | +7% |
| 1998 | 231.8 | +13% |
| 1997 | 205.5 | +8% |
| 1996 | 190.6 | +1% |
| 1995 | 187.8 | −2% |
| 1994 | 192.5 | +8% |
| 1993 | 178.1 | −2% |
| 1992 | 182.3 | +1% |
| 1991 | 179.7 | +12% |
| 1990 | 160.2 | +56% |
| 1989 | 102.5 | +18% |
| 1988 | 87.13 | +400% |
| 1985 | 17.42 | — |
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