scholarly journals A time‐varying network model for sexually transmitted infections accounting for behavior and control actions

2021 ◽  
Author(s):  
Kathinka Frieswijk ◽  
Lorenzo Zino ◽  
Ming Cao
Keyword(s):  
Sexually Transmitted Infections ◽  
Network Model ◽  
Time Varying ◽  
Sexually Transmitted ◽  
Control Actions ◽  
And Control

scholarly journals Incidence and time-varying predictors of HIV and sexually transmitted infections among male sex workers in Mexico City

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Karla Y. Ganley ◽  
Marta Wilson-Barthes ◽  
Andrew R. Zullo ◽  
Sandra G. Sosa-Rubí ◽  
Carlos J. Conde-Glez ◽  
...  
Keyword(s):  
Sexually Transmitted Infections ◽  
Mexico City ◽  
Sex Workers ◽  
Incidence Rates ◽  
Consistent Condom ◽  
Vaginal Intercourse ◽  
Time Varying ◽  
Male Sex Workers ◽  
Sexually Transmitted ◽  
Male Sex

Abstract Background Male sex workers are at high-risk for acquisition of sexually transmitted infections (STIs), including human immunodeficiency virus (HIV). We quantified incidence rates of STIs and identified their time-varying predictors among male sex workers in Mexico City. Methods From January 2012 to May 2014, male sex workers recruited from the largest HIV clinic and community sites in Mexico City were tested for chlamydia, gonorrhea, syphilis, hepatitis, and HIV at baseline, 6-months, and 12-months. Incidence rates with 95% bootstrapped confidence limits were calculated. We examined potential time-varying predictors using generalized estimating equations for a population averaged model. Results Among 227 male sex workers, median age was 24 and baseline HIV prevalence was 32%. Incidence rates (per 100 person-years) were as follows: HIV [5.23; 95% confidence interval (CI): 2.15–10.31], chlamydia (5.15; 95% CI: 2.58–9.34), gonorrhea (3.93; 95% CI: 1.88–7.83), syphilis (13.04; 95% CI: 8.24–19.94), hepatitis B (2.11; 95% CI: 0.53–4.89), hepatitis C (0.95; 95% CI: 0.00–3.16), any STI except HIV (30.99; 95% CI: 21.73–40.26), and any STI including HIV (50.08; 95% CI: 37.60–62.55). In the multivariable-adjusted model, incident STI (excluding HIV) were lower among those who reported consistently using condoms during anal and vaginal intercourse (odds ratio = 0.03, 95% CI: 0.00–0.68) compared to those who reported inconsistently using condoms during anal and vaginal intercourse. Conclusions Incidence of STIs is high among male sex workers in Mexico City. Consistent condom use is an important protective factor for STIs, and should be an important component of interventions to prevent incident infections.

scholarly journals Trend Analysis of Major Sexually Transmitted Infections in China, 1999-2018

2020 ◽  
Author(s):  
Han Chunxia ◽  
Ai Zisheng
Keyword(s):  
Sexually Transmitted Infections ◽  
Sexually Transmitted Diseases ◽  
Prevention And Control ◽  
Temporal Trend ◽  
Sexual Contact ◽  
Annual Percentage Change ◽  
Annual Increase ◽  
Sexually Transmitted ◽  
The Past ◽  
And Control

Abstract Background Sexually transmitted infections (STIs) are mainly transmitted by sexual contact or similar sexual contact, which can cause diseases of genitourinary organs ,accessory lymphatic system and major organs of the whole body. STIs include clinically symptomatic diseases and asymptomatic infections. The World Health Organization (WHO) reports that More than 1 million sexually transmitted infections (STIs) are acquired every day worldwide.By analyzing the temporal trend of the sexually transmitted infections incidence in China in the past 20 years, we can provide a scientific basis for the further development of prevention and control measures related to sexually transmitted infections. Methods Joinpoint regression model is used to fit the incidence data of three sexually transmitted diseases in China from 1999 to 2018. Annual percentage change (APC) and Average annual percentage Change (AAPC) are calculated to evaluate the temporal trend changes of the incidence of three major sexually transmitted diseases. Results The overall incidence of AIDS/HIV has been on the rise for 20 years, rising by an average of 33.7% per year (P < 0.05). The most obvious increase is in 2002–2005, an average annual increase of 102.5%. The overall incidence of gonorrhea is on a downward trend, decreasing by 4.9% per year on average (P < 0.05).However, its incidence shows a slow rising trend from 2012 to 2018, with an average annual increase of 6.0%. The overall incidence of syphilis is also on the rise, increasing by an average of 9.1% per year (P < 0.05). Except 1999–2003, the incidence of syphilis shows a downward trend, and the other time stages shows a significant upward trend. Conclusions In the past 20 years, the corresponding measures have been taken in China for sexually transmitted infections and achieved remarkable results, but the three major sexually transmitted infections are still in the forefront of the reported notifiable infectious diseases incidence in China. At the same time, all sexually transmitted infections are beginning to shift from high-risk population to the general population, especially adolescents and the floating population.Therefore, China should still pay more attention to the prevention and control of STIs to hold back their further spread or epidemic.

scholarly journals Trend Analysis of Major Sexually Transmitted Infections in China , 1999-2018

2020 ◽  
Author(s):  
Han Chunxia ◽  
Ai Zisheng
Keyword(s):  
Sexually Transmitted Infections ◽  
Prevention And Control ◽  
Percentage Change ◽  
Annual Percentage Change ◽  
Annual Average ◽  
Final Model ◽  
Sexually Transmitted ◽  
Percent Change ◽  
Morbidity Data ◽  
And Control

Abstract Background：The aim of our study was to analyze the trend changes and region distribution changes of three sexually transmitted infections (STIs) in China and provided a scientific basis for the government to make prevention and control measures.Methods：This study used Joinpoint regression model to fit the morbidity data of three STIs in China from 1999 to 2018. Annual percentage change (APC) and Average annual percentage Change (AAPC) were calculated to evaluate the trend changes of three STIs. We also used hierarchical clustering analysis to analyze the region distribution of three STIs in China from 2003-2018.Results ：We analyzed the morbidity data of three STIs in 1999-2018 derived from China Health Statistics Yearbook. The final model of AIDS was the 3 Joinpoint model (P = 0.01) with an annual average percent change (AAPC) of 33.7 (95% CI: 26.1-41.8, P < 0.001). The final model of gonorrhea was the 1 Joinpoint model (P= 0.0025) with an annual average percent change (AAPC) of -4.9 (95% CI: -6.2- -3.6, P < 0.001). The final model of gonorrhea was the 1 Joinpoint model (P < 0.05) with an annual average percent change (AAPC) of 9.1 (95% CI:6.9-11.4, P < 0.001). The region distribution of the morbidity of three STIs mainly concentrated in the southeast coastal areas and Xinjiang, other areas showed low epidemic levels.Conclusions: In a word, the morbidity of three STIs in China is still increasing slowly, the form of prevention and control for STIs is still very severe, especially in coastal provinces and Xinjiang. Therefore, it is necessary to actively popularize knowledge related to STIDs, and carry out large-scale peer education, further reduce epidemic of sexually transmitted infections in China.

scholarly journals Incidence and Time-Varying Predictors of HIV and Sexually Transmitted Infections Among Male Sex Workers in Mexico City

2020 ◽  
Author(s):  
Karla Ganley ◽  
Marta Wilson-Barthes ◽  
Andrew R. Zullo ◽  
Sandra G. Sosa-Rubí ◽  
Carlos J. Conde-Glez ◽  
...  
Keyword(s):  
Human Immunodeficiency Virus ◽  
Sexually Transmitted Infections ◽  
Mexico City ◽  
Sex Workers ◽  
Incidence Rates ◽  
Time Varying ◽  
Male Sex Workers ◽  
Sexually Transmitted ◽  
Immunodeficiency Virus ◽  
Male Sex

Abstract Introduction: Male sex workers are at high-risk for acquisition of sexually transmitted infections, including human immunodeficiency virus. We quantified incidence rates of sexually transmitted infections and identified their time-varying predictors among male sex workers in Mexico City.
 Methods: Male sex workers recruited from the largest human immunodeficiency virus clinic and community sites in Mexico City were tested for chlamydia, gonorrhea, syphilis, hepatitis, and human immunodeficiency virus at baseline, 6-months, and 12-months. Incidence rates with 95% bootstrapped confidence limits were calculated. We examined potential time-varying predictors using generalized estimating equations for a population averaged model. Results and Discussion: Among 227 male sex workers, median age was 24 and baseline human immunodeficiency virus prevalence was 32%. Incidence rates (per 100 person-years) were as follows: human immunodeficiency virus (5.23; 95% confidence interval [CI]: 2.15, 10.31), chlamydia (5.15; 95% CI: 2.58, 9.34), gonorrhea (3.93; 95% CI: 1.88, 7.83), syphilis (13.04; 95% CI: 8.24, 19.94), hepatitis B (2.11; 95% CI: 0.53, 4.89), hepatitis C (0.95; 95% CI: 0.00, 3.16), any sexually transmitted infection except human immunodeficiency virus (30.99; 95% CI: 21.73, 40.26), and any sexually transmitted infection including human immunodeficiency virus (50.08; 95% CI: 37.60, 62.55). In the multivariable-adjusted model, incident sexually transmitted infections (excluding human immunodeficiency virus) were lower among those who reported consistently using condoms during anal and vaginal intercourse (odds ratio = 0.03, 95% 0.00, 0.68) compared to those who reported inconsistently using condoms during anal and vaginal intercourse. Conclusions: Incidence of sexually transmitted infections is high among male sex workers in Mexico City. Consistent condom use is an important protective factor for sexually transmitted infections, and should be an important component of interventions to prevent incident infections.

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