Key Questions Answered
Q1. What is the relationship between TB and HIV?
Answer: TB and HIV have a strong and clinically important relationship. HIV weakens the immune system, making it easier for a person infected with Mycobacterium tuberculosis to develop active TB disease.
TB, in turn, remains one of the most important causes of illness and death among people living with HIV.
In 2024, an estimated 619,000 people living with HIV developed TB globally, and approximately 150,000 people with HIV died from TB. WHO identifies TB as the leading infectious killer of people living with HIV.
Q2. Why does HIV increase the risk of TB?
Answer: The immune system normally helps keep TB infection under control. HIV progressively weakens immune function, particularly the body’s ability to control TB bacteria.
As immunity declines, a previously silent TB infection can become active. A person with HIV can also acquire a new TB infection and develop disease more readily.
This is why TB screening is an important part of comprehensive HIV care.
Q3. Can TB be the first indication that a person has HIV?
Answer: Yes. In some individuals, TB may be the illness that leads doctors to consider underlying HIV infection.
Therefore, when a person is diagnosed with TB, particularly in situations where clinical assessment suggests increased HIV risk, appropriate HIV testing should be offered according to national guidelines.
Early identification of HIV provides an opportunity to start appropriate HIV care and prevent complications.
Q4. Should every TB patient be tested for HIV?
Answer: HIV status is an important part of TB assessment. WHO recommends HIV testing for people diagnosed with TB, with testing approaches adapted to national policies and local epidemiology.
Globally, 82% of people newly diagnosed with TB had a documented HIV test result in 2024, showing substantial progress but also indicating that testing gaps remain.
The principle is simple:
Have TB → Know your HIV status
Q5. Should people living with HIV be screened for TB?
Answer: Absolutely.
The screening must work in both directions:
TB patients → HIV testing and People living with HIV → TB screening
People living with HIV should be assessed regularly for TB symptoms and, where indicated, undergo further investigation.
Early identification of TB can prevent severe disease and reduce the risk of transmission to others.
Q6. How serious is the TB–HIV problem in India?
Answer: India continues to carry a substantial burden of both TB and HIV.
The India TB Report 2024, using WHO Global TB Report 2023 estimates, reported approximately:
48,000 estimated HIV-positive TB incident cases
11,000 estimated deaths from HIV-associated TB
37,600 notified TB patients reported as HIV-positive
99% of notified HIV-positive TB patients were reported to be on ART.
These figures should be interpreted carefully because the first two are estimated disease burden, whereas the latter two are based on reported/notified patients.
India has had a joint NTEP–NACP TB/HIV collaborative programme since 2001, reflecting the importance of managing these two infections together.
Q7. If a person has both TB and HIV, can both conditions be treated?
Answer: Yes.
Both TB and HIV are treatable, and effective treatment of both conditions can substantially improve outcomes.
The patient requires appropriate TB treatment along with HIV care, including antiretroviral therapy (ART). Treatment decisions should take into account the type of TB, drug-susceptibility pattern, other medicines and the patient’s overall clinical condition.
The two diseases should not be managed in isolation.
Q8. Should ART be started in a person with HIV who develops TB?
Answer: In general, people living with HIV who develop TB need both TB treatment and ART. The timing of ART depends on the clinical situation, including the type and severity of TB, and should be determined by the treating team.
This is particularly important in TB meningitis, where the timing of ART requires special consideration.
WHO reports that among people newly diagnosed with TB who were known to be living with HIV, global ART coverage reached 91% in 2024.
Q9. Can TB be prevented in people living with HIV?
Answer: Yes. TB preventive treatment (TPT), after appropriate evaluation to exclude active TB disease, is an important component of TB prevention in eligible people living with HIV.
WHO reports that approximately 1.8 million people living with HIV received TB preventive treatment globally in 2024. Preventing TB before it develops into active disease can save lives.
Q10. Is TB more difficult to diagnose in people living with HIV?
Answer: It can be.
The clinical presentation of TB may be less typical when immunity is severely compromised. Chest X-ray findings can also be atypical, and disease may occur outside the lungs.
Therefore, a high index of suspicion is important. When TB is suspected, appropriate microbiological and molecular investigations should be used rather than relying solely on symptoms or a conventional chest X-ray.
Modern molecular diagnostic tools have an important role in detecting TB and drug resistance.
Q11. Can a person living with HIV prevent TB transmission to family members?
Answer: Effective diagnosis and treatment of infectious TB are the most important steps.
If pulmonary TB is infectious, appropriate cough etiquette, ventilation and other infection-control measures should be followed as advised by the healthcare team.
People living in close contact with a person with TB may need evaluation for TB infection or disease, depending on their age, exposure and risk factors.
Q12. Does having HIV mean that a person will definitely develop TB?
Answer: No.
HIV substantially increases the risk of TB, but not every person living with HIV develops TB.Good HIV care, effective ART, TB screening and appropriate TB preventive treatment for eligible individuals can substantially reduce the risk. This is why early HIV diagnosis and continuing HIV care are so important.
Dr S K Arora’s Take-Home Message :
“TB and HIV should never be looked at as two completely separate problems. Every person diagnosed with TB should have appropriate assessment of HIV status, and every person living with HIV should be regularly assessed for TB. Early diagnosis, timely treatment of TB, appropriate ART and TB preventive treatment for eligible individuals can prevent severe disease and save lives.”
End Tobacco → End TB → Save Lives
Dr S K Arora
WHO Awardee | Senior Chest Specialist | TB Expert | Tobacco Control Advocate | Public Health India
