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Table 2 Integrated screening programs at clinics for sexually transmitted diseases (STD)

From: Outcomes of hepatitis C screening programs targeted at risk groups hidden in the general population: a systematic review

Program characteristics

Program outcomes

First author, year of publication

Calendar year of data collection

Population

Country and HCV prevalence according to CDC[23]

Setting of screening

Duration of screening program

Other tests

Prescreening selection

Media activities

Screening uptake and anti-HCV prevalence (95% CI)

Risk profile of identified HCV cases/Risk factors associated with HCV

Follow-up of HCV-infected individuals

D'Souza et al. 2003 [59]

2001

STD clinic clients

USA (1.9%): Houston

STD clinic

9 months

STD

Yes, risk assessment questionnaire. screening offered to high-risk groups a

NR

Scr. uptake: 95.8% (822/859)

Prevalence: 15.3% (126/822; 95% CI:12.7-17.7)*

Multivariable regr. analysis:

- History of IDU

- Age ≥25 yrs

- Heroin use

- Non-transfusion/ transplantation blood exposure

- Shared straw to snort drugs

Patients were referred to appropriate settings for follow-up (no results were reported).

Outcomes:

RNA rate: NR

Start treatment: NR

SVR: NR

Scott et al. 2010 [60]

2007

STD clinic clients

UK (1.1%): London, Chelsea and Westminister hospital

STD clinic in hospital

6 months

STD

Yes, MSM

NR

Scr. uptake: 68.6% (2309/3365)

Prevalence: 0.6% (15/2309; 95% CI:0.4-1.1%)**

Listed risk factors:

- HIV+

- History of IDU

- Unprotected anal intercourse

HCV RNA was tested in 13/15 HCV antibody positive persons.

Outcomes:

RNA rate: 69.2% (9/13)

Start treatment: NR

SVR: NR

Weisbord et al. 2003 [61]

2001

STD clinic clients

USA (1.9%): Miami

STD clinic

3 months

HAV, HBV

No

NR

Scr. uptake: 50.3% (687/1365)

Prevalence: 4.7% (32/687; 95% CI: 3.3-6.5)***

Multivariable regr. analysis:

- History of IDU

- Sex with HCV + person

- Spent ≥ 1 day in prison

- Older age

Patients received their test results within two weeks (no further results reported).

Outcomes:

RNA rate: NR

Start treatment: NR

SVR: NR

Gunn et al. 2003 [62]

1999-2000

STD clinic clients

USA (1.9%): San Diego

STD clinic

8 months

STD

No

No

Scr. uptake: NR

Prevalence: 4.9% (165/3367; 95% CI: 4.2-5.7)***

Multivariable regr. analysis:

- History of IDU

- Age ≥30 yrs

- Ever in jail

- Blood transfusion before 1992

- History of bacterial STD

- IDU sex partner

Post-test counseling was offered. A list of medical care resources was provided. In total, 136/165 were interviewed of whom 44% had no medical insurance, but 87% planned to have a medical evaluation.

Outcomes: RNA rate: NR

Start treatment: NR

SVR: NR

Mapagu et al. 2008 [63]

2000-2002

STD clinic clients

Australia (2%): Canberra

STD clinic

3 years

STD, BBV

No

NR

Scr. uptake: 46.0%

(3113/6774)

Prevalence: 3.1% (95/3113; 95% CI: 2.5-3.7%)**

Listed risk factors:

- History of IDU

- Tatoos

- Body piercings

- Blood transfusion

- IDU partner

- Needle stick

- Mother HCV+

- Medical treatment overseas in childhood

- Prison

Of the 95 HCV antibody positive persons, 47 were tested for HCV RNA.

Outcomes:

RNA rate: 61.7% (29/47)

Start treatment: NR

SVR: NR

Zimmerman et al. 2007 [64]

2001-2005

STD clinic clients

USA (1.9%): Illinois excluding Chicago

STD clinics

5 years

HBV (only 2001), STD

Yes: 2001: IDU and snorting drugs were criteria. From 2002: only IDU

NR

Scr. uptake: NR

Listed risk factors:

- Mainly IDU

Because of inadequate resources, the referrals and follow-up were not monitored.

Prevalence: 21.2% (646/3042; 95% CI: 19.8-22.7)***

 

Outcomes: RNA rate: NR

Start treatment: NR

SVR: NR

Subiadur et al. 2007 [65]

2000-2005

STD clinic clients

USA (1.9%): Denver

STD clinics

6 years

STD, HIV

Yes: IDU, HCV-infected sex partner, blood transfusion before 1992

NR

Scr. uptake: NR

NR

Patients were referred to a specialist but a sub-study of 65/467 clients showed that <20% followed through with recommended services.

Prevalence: 28.0%. (467/1666; 95% CI: 25.9-30.2)**

Outcomes: RNA rate: NR

Start treatment: NR

SVR: NR

Heseltine & McFarlane 2007 [66]

2000-2005

Not specified; clients of the various settings

USA (1.9%): Texas

Several HIV/STD service providers: HIV counseling and testing sites; drug treatment facilities, corrections facilities, field visit/outreach sites (e.g., bars, adult bookstores, homeless shelters), STD clinics, family planning clinic, primary health care facility

6 years

STD, HIV

Yes: IDU, sharing equipment used to snort drugs; having received a tattoo or piercing under unsanitary conditions; having 50 or more lifetime sex partners; exchanging sex for money; having sex with an HCV-positive person; people with some medical exposures and occupations

No

Scr. uptake: NR

Prevalence: 23.2% (8964/38717; 95% CI: 22.7-23.6)***

Listed risk factors:

- History of IDU (main risk factor)

- Risky tattoo/piercing

- Risky sex

- Blood or medical exposure

- Sharing snorting equipment

- Occupational exposure

Post-test counseling and referral to public and private providers in the local community was offered. 50.3% of 776 substance abuse referrals, 22.4% of 4410 medical evaluation referrals, and 17.4% of 2299 vaccination referrals were confirmed.

Outcomes: RNA rate: NR

Start treatment: NR

SVR: NR

Gunn et al. 2001 [67]

1998

STD clinic clients

USA (1.9%): San Diego

STD clinic

6 weeks

HBV

No

No

Scr. uptake: 82.4% (618/750)

Prevalence: 3.4% (21/618; 95% CI: 2.2-5.1)**

Listed risk factors:

- History of IDU

- Among non-IDU: age ≥30 yrs

HCV-positive persons were given information about the prevention of HCV transmission and a list of facilities where they might obtain a medical evaluation. Appr. 8 months after the project, 14/21 clients were contacted of whom 6 had seen a physician for medical evaluation.

Outcomes: RNA rate: NR

Start treatment: NR

SVR: NR

Ellks 2010 [68]

2008

Visitors of sexual and reproductive health service

UK (1.1%): Crewe

STD and reproductive Health Service (integrated service)

1 year

HIV, syphilis, HBV

No

No

Scr. uptake: NR

Prevalence: 0.1% (8/5468; 95% CI: 0.1-0.3)**

Listed risk factors:

- History of IDU

- MSM who snorted drugs

There were follow-up appointments for those who tested positive.

Outcomes: RNA rate: NR

Start treatment: NR

SVR: NR

Tweed et al. 2010 [69]

2002-2007

Visitors of STD and contraception and sexual health clinics, and specialist HIV services

UK (1.1%): Throughout the country

STD clinics, contraception and sexual health clinics, specialist HIV services

6 years

Likely STD/HIV

No

NR

Scr. uptake: estimated at 14.0%

Prevalence: 3.2% (285 8/90424; 95% CI: 3.04-3.27)**

Multivariable regr. analysis:

- Male sex

- Age 35+

- History of IDU

Those who tested positive were followed-up with clinicians (no data reported).

           

Of the antiHCV positive individuals, 60.1% (1719/2858) were tested for HCV RNA.

           

Outcomes: RNA rate: 69.2% (1191/1719)

Start treatment: NR

SVR: NR

  1. Note: CI = confidence interval; NR = not reported; STD = sexually transmitted disease; BBV = blood-borne virus; IDU = injecting drug use; HCV = hepatitis C virus; HBV = hepatitis B virus; HAV = hepatitis A virus; HIV = human immunodeficiency virus; MSM = men who have sex with men; SVR = sustained virological response.
  2. *HCV-antibody prevalence is considered suboptimal (data were collected before 1994 when sensitivity/specificity of tests was not optimal, or reactive HCV-antibody test results were not confirmed by immunoblot).
  3. **The reliability of the reported HCV-antibody prevalence is undecided (data were collected after 1993, but the diagnostic tests are unspecified, or other than described below, or dried blood spots or oral fluid samples were used).
  4. ***HCV-antibody prevalence is considered valid; data were collected after 1993, and reactive HCV-antibody test results were confirmed by second or higher generation immunoblot assays from Ortho, Chiron, Novartis (RIBA), Innogenetics (LiaTek), Pasteur (DECISCAN HCV), Genelabs Diagnostics (HCV BLOT), or Mikrogen (recomBlot HCV IgG 2.0).
  5. aHistory of IDU, body piercing/tattooing in unsanitary conditions, transfusion recipients before 1987, needlestick injury, hemodialysis patients, those born to mothers with documented HCV infection, individuals who reported ever having been told that they were infected with HCV yet lacked supporting documentation.