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Global estimates of the prevalence and incidence of four curable sexually transmitted infections in 2012 based on systematic review and global reporting

(2015) PLOS ONE. 10(12).
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Abstract
Background : Quantifying sexually transmitted infection (STI) prevalence and incidence is important for planning interventions and advocating for resources. The World Health Organization (WHO) periodically estimates global and regional prevalence and incidence of four curable STIs: chlamydia, gonorrhoea, trichomoniasis and syphilis. Methods and Findings : WHO's 2012 estimates were based upon literature reviews of prevalence data from 2005 through 2012 among general populations for genitourinary infection with chlamydia, gonorrhoea, and trichomoniasis, and nationally reported data on syphilis seroprevalence among antenatal care attendees. Data were standardized for laboratory test type, geography, age, and high risk subpopulations, and combined using a Bayesian meta-analytic approach. Regional incidence estimates were generated from prevalence estimates by adjusting for average duration of infection. In 2012, among women aged 15-49 years, the estimated global prevalence of chlamydia was 4.2%(95% uncertainty interval (UI): 3.7-4.7%), gonorrhoea 0.8%(0.6-1.0%), trichomoniasis 5.0%(4.0-6.4%), and syphilis 0.5%(0.4-0.6%); among men, estimated chlamydia prevalence was 2.7% (2.0-3.6%), gonorrhoea 0.6%(0.40.9%), trichomoniasis 0.6%(0.4-0.8%), and syphilis 0.48% (0.3-0.7%). These figures correspond to an estimated 131 million new cases of chlamydia (100-166 million), 78 million of gonorrhoea (53-110 million), 143 million of trichomoniasis (98-202 million), and 6 million of syphilis (4-8 million). Prevalence and incidence estimates varied by region and sex. Conclusions : Estimates of the global prevalence and incidence of chlamydia, gonorrhoea, trichomoniasis, and syphilis in adult women and men remain high, with nearly one million new infections with curable STI each day. The estimates highlight the urgent need for the public health community to ensure that well-recognized effective interventions for STI prevention, screening, diagnosis, and treatment are made more widely available. Improved estimation methods are needed to allow use of more varied data and generation of estimates at the national level.
Keywords
UNITED-STATES, DISEASE, STI, RISK

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Chicago
Newman, Lori, Jane Rowley, Stephen Vander Hoorn, Nalinka Saman Wijesooriya, Magnus Unemo, Nicola Low, Gretchen Stevens, Sami Gottlieb, James Kiarie, and Marleen Temmerman. 2015. “Global Estimates of the Prevalence and Incidence of Four Curable Sexually Transmitted Infections in 2012 Based on Systematic Review and Global Reporting.” Plos One 10 (12).
APA
Newman, L., Rowley, J., Vander Hoorn, S., Wijesooriya, N. S., Unemo, M., Low, N., Stevens, G., et al. (2015). Global estimates of the prevalence and incidence of four curable sexually transmitted infections in 2012 based on systematic review and global reporting. PLOS ONE, 10(12).
Vancouver
1.
Newman L, Rowley J, Vander Hoorn S, Wijesooriya NS, Unemo M, Low N, et al. Global estimates of the prevalence and incidence of four curable sexually transmitted infections in 2012 based on systematic review and global reporting. PLOS ONE. 2015;10(12).
MLA
Newman, Lori, Jane Rowley, Stephen Vander Hoorn, et al. “Global Estimates of the Prevalence and Incidence of Four Curable Sexually Transmitted Infections in 2012 Based on Systematic Review and Global Reporting.” PLOS ONE 10.12 (2015): n. pag. Print.
@article{7077906,
  abstract     = {Background : Quantifying sexually transmitted infection (STI) prevalence and incidence is important for planning interventions and advocating for resources. The World Health Organization (WHO) periodically estimates global and regional prevalence and incidence of four curable STIs: chlamydia, gonorrhoea, trichomoniasis and syphilis. 
Methods and Findings : WHO's 2012 estimates were based upon literature reviews of prevalence data from 2005 through 2012 among general populations for genitourinary infection with chlamydia, gonorrhoea, and trichomoniasis, and nationally reported data on syphilis seroprevalence among antenatal care attendees. Data were standardized for laboratory test type, geography, age, and high risk subpopulations, and combined using a Bayesian meta-analytic approach. Regional incidence estimates were generated from prevalence estimates by adjusting for average duration of infection. In 2012, among women aged 15-49 years, the estimated global prevalence of chlamydia was 4.2\%(95\% uncertainty interval (UI): 3.7-4.7\%), gonorrhoea 0.8\%(0.6-1.0\%), trichomoniasis 5.0\%(4.0-6.4\%), and syphilis 0.5\%(0.4-0.6\%); among men, estimated chlamydia prevalence was 2.7\% (2.0-3.6\%), gonorrhoea 0.6\%(0.40.9\%), trichomoniasis 0.6\%(0.4-0.8\%), and syphilis 0.48\% (0.3-0.7\%). These figures correspond to an estimated 131 million new cases of chlamydia (100-166 million), 78 million of gonorrhoea (53-110 million), 143 million of trichomoniasis (98-202 million), and 6 million of syphilis (4-8 million). Prevalence and incidence estimates varied by region and sex. 
Conclusions : Estimates of the global prevalence and incidence of chlamydia, gonorrhoea, trichomoniasis, and syphilis in adult women and men remain high, with nearly one million new infections with curable STI each day. The estimates highlight the urgent need for the public health community to ensure that well-recognized effective interventions for STI prevention, screening, diagnosis, and treatment are made more widely available. Improved estimation methods are needed to allow use of more varied data and generation of estimates at the national level.},
  articleno    = {e0143304},
  author       = {Newman, Lori and Rowley, Jane and Vander Hoorn, Stephen and Wijesooriya, Nalinka Saman and Unemo, Magnus and Low, Nicola and Stevens, Gretchen and Gottlieb, Sami and Kiarie, James and Temmerman, Marleen},
  issn         = {1932-6203},
  journal      = {PLOS ONE},
  language     = {eng},
  number       = {12},
  pages        = {17},
  title        = {Global estimates of the prevalence and incidence of four curable sexually transmitted infections in 2012 based on systematic review and global reporting},
  url          = {http://dx.doi.org/10.1371/journal.pone.0143304},
  volume       = {10},
  year         = {2015},
}

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