bloody prisons: hepatitis b and c in the prison environment

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The H epatitis C I ncidence & T ransmission S tudy (HITS) Professor Andrew Lloyd Bloody prisons: hepatitis B and C in the prison environment

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Page 1: Bloody prisons: hepatitis B and C in the prison environment

The Hepatitis C Incidence & Transmission Study (HITS)

Professor Andrew Lloyd

Bloody prisons: hepatitis B and C in the prison environment

Page 2: Bloody prisons: hepatitis B and C in the prison environment

• Background ‐ hepatitis B & C and prisons

• HITS cohort

• Hepatitis C incidence and risk factors

• Hepatitis B incidence and immunisation uptake

Overview 

Page 3: Bloody prisons: hepatitis B and C in the prison environment

Hepatitis B ‐ key facts• ~ 360 million chronically infected individuals

• ~ 5 million new cases of HBV annually

• Transmission amongst adults parenteral & sexual

• Injecting drug use (IDU) accounts for 45% Australian HBV infections

• Adult infection commonly results in clearance (95%); fulminant hepatitis in ~0.1‐0.5%

• Australian HBsAg prevalence ~ 0.6‐1.1%

• Highly effective vaccine, but uptake amongst IDUs poor

• Modelling (UK) suggests 70% immunisation coverage of prisoners could achieve 80% reduction in HBV incidence over 12 years in IDU

Page 4: Bloody prisons: hepatitis B and C in the prison environment

Hepatitis C ‐ key facts• 3% of the world’s population infected

• Blood‐to‐blood transmission

• Injecting drug use and unsafe medical injecting devices

• No well established behavioural prevention strategy 

• Clearance in ~30%; chronicity in 70%

• Chronic liver inflammation, progressive fibrosis

• Cirrhosis ~ 5‐10% per decade; then liver failure / HCC 2‐5% annually

• Antiviral Rx increasingly effective (~50% cured) ‐ arduous, costly

• Direct‐acting antivirals offer potential for ‘treatment‐as‐prevention’

Page 5: Bloody prisons: hepatitis B and C in the prison environment

• NSW inmate population: ~10,000; ~ 7% females• 74% Australian born, 17% non‐English background• Aboriginal : 19%• Education: 50% < Year 10• Mental illness: 33% males, 59% females• Short sentences (incl. remand): 63% males, 76% females <6 mo.• Recidivism: 70%

NSW prisoners

Page 6: Bloody prisons: hepatitis B and C in the prison environment

• Predominantly public sector prisons• Facilities:

– 30 correctional centres– 11 periodic detention centres– 2 transition centres– 8 police cell & 7 court cell complexes– 9 juvenile detention centres

• ~20,000 imprisonments annually• ~146,000 movements annually

NSW prisons

Page 7: Bloody prisons: hepatitis B and C in the prison environment

Prevalence of hepatitis  B and C in Australian prisons

National Prison Entrants Blood Borne Virus and Risk Behaviour Survey Report 2004, 2007 and 2010

Page 8: Bloody prisons: hepatitis B and C in the prison environment

Prevalence of hepatitis  B and C in Australian prisons

National Prison Entrants Blood Borne Virus and Risk Behaviour Survey Report 2004, 2007 and 2010

Page 9: Bloody prisons: hepatitis B and C in the prison environment

Hepatitis C Incidence & Transmission Study (HITS) cohort

• Prospective cohort study enrolling high‐risk, HCV uninfected IDU prisoners.

• Subjects followed up at 6 monthly intervals.

• Structured interviews and HCV testing at enrolment (baseline) and each follow‐up.

• Sample storage (serum, plasma, PBMCs, DNA)

• Detailed immunological and virological studies in incident cases.

Page 10: Bloody prisons: hepatitis B and C in the prison environment

Aims• To describe risk behaviours for blood borne virus 

transmission in the prison setting.

• To determine HCV incidence rates in the prison setting.

• To define demographic, behavioural factors, and host immune factors  associated with incident infection, and clearance after incident infection. 

• To provide a platform for immunological and virological studies of the pathogenesis of primary HCV infection.

• To define HBV incidence and immunisation uptake rates.

Page 11: Bloody prisons: hepatitis B and C in the prison environment

SubjectsInclusion criteria• ≥ 18 years• “ever” injected drugs• anti‐HCV Ab negative in last 12 

months• recently imprisoned (<12 mo.)

Exclusion criteria• insufficient English• HIV positive• pregnant• forensic

Page 12: Bloody prisons: hepatitis B and C in the prison environment

Structured interview:• Demographics• IDU risk behaviours (IDU, sharing, drug choice(s))• Other blood to blood risk behaviours (tattooing, piercing, 

physical assaults or injuries)• Taking a break from injecting (break, duration)• Current treatments for drug dependency, (e.g. methadone 

maintenance treatment (MMT))

Methods

Blood for HCV Ab (ELISA), HCV RNA (Taqman), and storage

Page 13: Bloody prisons: hepatitis B and C in the prison environment

Methods ‐ Interview

Page 14: Bloody prisons: hepatitis B and C in the prison environment

Methods ‐ Interview

Page 15: Bloody prisons: hepatitis B and C in the prison environment

Epidemiological studies

Time -12 0 6 12 18(mths)

Pre-enrolmentnegative HCV

test

Baseline HCV test

Follow-up HCV tests

Incidence analysis 1 Incidence analysis 2

Page 16: Bloody prisons: hepatitis B and C in the prison environment

ResultsDemographic and behavioural characteristics at enrolment (n=488)Variable

Mean age yrs (SD) 28 (±6.9)

Gender (%) male 65%

Education (%) ≤10 years schooling 76%

Aboriginal & Torres Strait Islander (%) 25%

Non‐English speaking background (%) 2%

Previous imprisonment (%) 72%

Ever had a tattoo (%) 73%

Mean duration of injecting (years) 8.5 (±6.2)

Ever shared injecting equipment (%) 63%

IDU in prison (%) 27%

Page 17: Bloody prisons: hepatitis B and C in the prison environment

• HCV Ab and PCR testing of first 488 inmates enrolled:

o 94 HCV incident cases

o Incidence: 31.6 % per annum (p.a.)(Teutsch et al., BMC Public Health 2010)

• HCV Ab and PCR testing of 120 were continuously in prison:

o 16 incident cases

o Incidence: 34.2 % p.a.(Dolan et al., Eur J Epidemiology, 2010)

Incidence analysis 1 ‐ Baseline

Page 18: Bloody prisons: hepatitis B and C in the prison environment

Incidence analysis 2 – Prospective cohort

• Inclusion:

– HCV Ab and PCR negative at baseline 

– At least one follow‐up visit.

• Results:– 225 subjects– 325 person years of follow‐up– 40 incident cases:

o 1 symptomatico 14 genotype 1, 6 genotype 3, 3 other genotypes, 17 unknown

Page 19: Bloody prisons: hepatitis B and C in the prison environment

Prospective cohort

Variable

Mean age yrs (SD) 27.2 (±6.5)

Gender (%) male 73%

Education (%) ≤10 years schooling 76%

Aboriginal & Torres Strait Islander (%) 28%

Non‐English speaking background (%) 2%

Previous imprisonment (%) 72%

Ever had a tattoo (%) 70%

Mean duration of injecting yrs (SD) 7.8 (±5.9)

Ever shared injecting equipment (%) 66%

Demographic and behavioural characteristics (n=225)

Page 20: Bloody prisons: hepatitis B and C in the prison environment

Conclusions• High incidence of risk behaviours

– IDU‐related– Other blood‐to‐blood

• Significant HCV incidence (12.3%)– Key risks ‐ IDU, heroin– No protection from MMT, bleach

• Significant HBV incidence (4.2%)– Successful immunisation ~50%– Opportunities lost

Page 21: Bloody prisons: hepatitis B and C in the prison environment

Professor Andrew Lloyd (UNSW)

Professor Paul Haber (RPAH)

A/Professor Kate Dolan (NDARC)

Professor Michael Levy (ANU)

Professor Bill Rawlinson (POWH)

A/Professor Peter White (UNSW)

A/Professor Carla Treloar (UNSW)

Professor Greg Dore (Kirby)

Professor Lisa Maher (Kirby)

Professor John Kaldor (Kirby)

A/Professor Rose Ffrench (Burnet)

HITS Investigators

AcknowledgmentsStaff/Students

Dr Suzy Teutsch (IIRC, UNSW)

Dr Fabio Luciani (IIRC, UNSW)

Dr Barb Cameron (IIRC, UNSW) 

Dr Rowena Bull ((IIRC, UNSW)

Hui Li (IIRC, UNSW)

Dr Jeff Post (POWH)

Parastu Hossieny (IIRC, UNSW)

Emma Jagger (IIRC, UNSW)

Mirna Hunter (IIRC, UNSW)

Lisa Elliott (IIRC, UNSW)

Peter Sugden (IIRC, UNSW)

Nam Nguyen (IIRC, UNSW)

Dominic Douglas (IIRC, UNSW)

Luke McCredie (CHRCJ)

Marian Bloomfield (CHRCJ)

Leng Boonwaat (CHRCJ)

Dr Libby Topp (NCHECR)

Nick Scheuer (NDARC)

Brendan Jacka (SEALS)

Alicia Steller (SEALS)

Yong Pan (SEALS)

Chrissy Willenborg (SEALS

Dr Peter Robertson (SEALS)

NHMRC, UNSW Hepatitis C Vaccine InitiativeNSW Health

Funding

Page 22: Bloody prisons: hepatitis B and C in the prison environment