CDST_LT: Comorbidity screening and testing

Several medical conditions are risk factors for TB and poor TB treatment outcomes. Similarly, TB can complicate the course of some diseases. Therefore, it is important to identify these comorbidities in people diagnosed with TB to ensure early diagnosis and improved outcomes. When these conditions are highly prevalent in the general population, they can significantly contribute to the TB burden. Consequently, reducing the prevalence of these conditions can help prevent TB.

TB shares underlying social determinants with many of these conditions. Addressing the social determinants of health is a shared responsibility across disease programmes and other stakeholders within and beyond the health sector. 

Figure: Various comorbid and special situation related with tuberculosis

The primary impact of HIV on TB is that the risk of developing TB becomes higher in patients with HIV. Overall, HIV-infected persons have an approximately 8-times greater risk of TB than persons without HIV infection. 

Screen TB PLHIV patients for symptoms of TB and HIV

Figure: Screening steps for TB - HIV patients

Treatment for TB HIV Patients​

• All TB patients who have been diagnosed and registered under NTEP should be referred for screening for HIV.
• Referral of TB patients for screening for HIV and its recording & reporting is the responsibility of the Peripheral Health Institutions(PHI) where TB treatment is initiated.
• TB patients diagnosed with HIV will receive the same duration of TB treatment with daily regimen as non-HIV TB patients.
• TB patients must be referred to the nearest ART(Anti - Retroviral Treatment) centre for management of HIV.

As a consequence of urbanization as well as social and economic development, there has been a rapidly growing epidemic of Diabetes Mellitus(DM). India has the second largest number of diabetic people in the world.

Screen TB patients for symptoms of diabetes

Figure: Screening steps for TB - Diabetic Patients

Treatment for TB Diabetes Patients​

• All TB patients who have been diagnosed and registered under NTEP will be referred for screening for Diabetes.
• Referral of TB patients for screening for DM and its recording & reporting is the responsibility of the Peripheral Health Institutions(PHI) where TB treatment is initiated.
• TB patients diagnosed with diabetes will receive the same duration of TB treatment with daily regimen as non-diabetic TB patients.
• TB patients must be referred to the nearest healthcare facility for management of DM.
• Regular monitoring of blood sugar levels is advised.

The presence of tuberculosis disease during pregnancy, delivery, and postpartum is known to result in unfavourable outcomes for both pregnant women and their infants. These outcomes include a roughly two-fold increased risk of preterm birth, low birth weight, intrauterine growth restriction, and a six-fold increase in perinatal death.

Screen TB patients in Pregnancy & Lactating Patients

Figure: Screening Steps in special situation - Pregnancy and Lactating TB Patients

Treatment for TB - Pregnant & Lactating Patients

• Cases of pregnant/lactating women with active TB should be referred to the nearest health facility of NTEP for further management.
• They should be continued on iron and folic acid and other vitamins and minerals to complement their maternal micronutrient needs.
• In situations when calcium intake is low, calcium supplementation is recommended as part of antenatal care.

Tuberculosis and COVID-19 are infectious diseases which primarily attack the lungs. They present with similar symptoms of cough, fever and difficulty in breathing, although TB disease has a longer incubation period and a slower onset of disease.

Screen patients for symptoms of TB and COVID-19

Figure: Screening steps for TB - COVID 19 Patients

Management of TB & COVID-19 Patients

People with TB are likely to be at increased risk of COVID-19 infection, illness and death. So, TB patients should take precautions as advised by health authorities to be protected from COVID-19 and continue their TB treatment as prescribed.

Prevention: While both TB and COVID-19 are spread by close contact between people, the exact mode of transmission differs. Thus, the patient should be explained the following measures to control disease spread.

• Apart from that keeping rooms well ventilated, avoiding crowds and Respiratory precautions are thus important in the control of COVID-19 and TB Disease