Tuberculosis and HIV Co-Infection (1)

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Tuberculosis and HIV Co-Infection

Active TB may be present when ART needs to be initiated or it may develop during treatment.

TB and HIV care for co-infected patients should be provided in an integrated manner under one roof by one care team (one-stop-shop).

Co-management of TB and HIV is complicated by:

  • Drug interactions between rifampicin and both the NNRTI and PI classes
  • Immune reconstitution inflammatory syndrome (IRIS)
  • Pill burden, overlapping toxicities and adherence issues

Management

ART should be initiated in all TB/HIV co-infected people irrespective of their clinical stage or CD4 count. However, the timing of initiation of treatment may differ based on whether the patient is diagnosed with TB before or after initiating ART.

SITUATION

RECOMMENDATIONS

TB patients diagnosed with HIV

Start anti-TB medicines immediately, THEN start ARVs 2 weeks later (see table below)

Patient already on ART, diagnosed with TB

Start anti-TB medicines immediately, adjust regimen as per guidelines below

ADULT TB patients diagnosed with TB but with CD4 <50

 

Start anti-TB medicines immediately, start ARVs before completing 2 weeks

ARV regimen in ART-naive patients on TB treatment

AGE GROUP

RECOMMENDED REGIMEN

Adults, Pregnant and Breastfeeding Women, and Adolescents

TDF+3TC+EFV

Children aged 3 - < 12 years

ABC+3TC+EFV

Children 0 - < 3 years

ABC+3TC+AZT

ARV regimen substitution for patients initiating TB treatment while on ART

 

AGE GROUP

REGIMEN WHEN DIAGNOSED WITH TB

 

RECOMMENDED ACTION/ SUBSTITUTION

Adults, Pregnant and Breastfeeding Women and Adolescents

 

If on EFV- based regimen

Continue with the same regimen but double the dose of DTG (give DTG twice daily)

If on NVP based regimen

Substitute NVP with EFV. If EFV is contraindicated, give DTG as above. If DTG not available, give a triple NRTI regimen (ABC+3TC+AZT).

If on LVP/r based regimen

Continue the same regimen but double the dose of DTG (give DTG twice daily)

If on ATV/r based regimen

Continue the same regimen and give Rifabutin for TB treatment

Children aged 3 - <12 years

 

 

If on EFV- based regimen

Continue the same regimen

If on NVP or based regimen

Substitute NVP with EFV.

If EFV is contraindicated, give a triple NRTI regimen (ABC+3TC+AZT)

LPV/r

Continue the same regimen and give Rifabutin for TB treatment

Children 0 -

<3 years

If on LPV/r or NVP based regimen

Give triple NRTI regimen ABC+3TC+AZT

Second line ART for patients with TB

  • There are significant drug interactions with PIs and rifampicin. 
  • If rifabutin is available, it may be used in place of rifampicin with ATV/r or LPV/r, but it is contraindicated in patients with WBC counts below 1000/mm3.
  • Maintaining PI in second line regimens while switching from Rifampicin to Rifabutin (if available) is ideal

TB prevention

  • BCG immunisation: it protects children against severe forms of TB. It can be given at birth. If delayed, avoid in symptomatic HIV
  • IPT (Isoniazid Preventive Treatment) see Tuberculosis