Clinical profile, risk factors, disease severity, and outcome for COVID-19 disease in patients with tuberculosis on treatment under the National Tuberculosis Elimination Program: a cohort of 1400 patients

COVID-19 affected millions of people worldwide, and tuberculosis (TB) continues to affect millions of people each year. The combined pandemic of COVID-19 and TB had a catastrophic effect on healthcare policies and healthcare setups around the globe. The clinical profile and factors affecting the outcome of COVID-19 disease in TB patients on treatment in field conditions have not been studied in detail. The present study attempted to study the occurrence of COVID-19 among patients on TB treatment in terms of severity of COVID-19 disease and outcome of both COVID-19 and TB in patients at National Tuberculosis Elimination Program treatment centers over a period of one year during peak COVID-19 times. Out of 1400 TB patients enrolled, 65 (5%) suffered from COVID-19 disease. Of the 65 TB patients with COVID-19 disease, 37 (57%) were male and under 45 years old, 33 (51%) had a TB diagnosis after first receiving a COVID-19 diagnosis, 29 (45%) had a TB diagnosis first, and received anti-TB treatment before receiving a COVID-19 diagnosis, and only 3 patients (5%) had a COVID-19 and TB diagnosis concurrently. The majority of 59 (91%) patients had mild COVID-19 disease. The outcome of TB treatment was available in 25 patients out of these 65 COVID-19-positive patients, with 21 (84%) patients having a favorable outcome. Out of the 65 COVID-19-positive patients, 4/25 (16%) had unfavorable outcomes, with one patient (4%) failing TB treatment and two patients (8%) dying. This is the first study from India that studied the occurrence and course of COVID-19 among a large number of TB patients taking anti-TB treatment under programmatic conditions. Due to the similarity in symptoms of TB and certain viral respiratory illnesses, a protocol should be established for health care to check patients for both illnesses.