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Dr. Mel Spigelman, president of the non-profit TB Alliance, said more than a decade of progress was lost when COVID-19 emerged in 2020.

“Despite gains in areas like preventative therapy, we are still behind in just about every pledge and goal regarding TB,� Spigelman said.

WHO also blamed COVID-19 for much of the rise in TB, saying the pandemic “continues to have a damaging impact on access to TB diagnosis and treatment.� It said progress made before 2019 has since “slowed, stalled or reversed.�

With fewer people being diagnosed with the highly infectious disease, more patients unknowingly spread tuberculosis to others in outbreaks that may not have been spotted in countries with weak health systems.

WHO reported that the number of people newly identified with TB fell from 7 million in 2019 to 5.8 million in 2020.

WHO also said COVID-19 restrictions, including lockdowns and physical distancing protocols, also hampered TB treatment services and may have prompted some people to skip going to health facilities for fear of catching coronavirus. Officials added that the downturn in the global economy was also a factor, saying that about half of all TB patients and their families face “catastrophic total costs� due to their treatment. WHO called for more countries to cover all TB diagnosis and treatment expenses.

After COVID-19, TB is the world’s deadliest infectious disease. It is caused by bacteria that typically affects the lungs. The germs are mostly spread from person to person in the air, such as when an infected individual coughs or sneezes.

TB mostly affects adults, particularly those who are malnourished or have other conditions like HIV; more than 95% of cases are in developing countries.

According to the WHO report, only one in three people with drug-resistant TB are receiving treatment.

“Drug-resistant TB is curable, but alarmingly, cases are on the rise for the first time in years,� said Dr. Hannah Spencer, who is with Doctors Without Borders in South Africa. “It’s urgent that shorter, safer and more effective treatments are scaled up now.�

Spencer called for lowering the prices of TB treatment so a complete treatment course costs no more than $500.

WHO also said ongoing conflicts in eastern Europe, Africa and the Middle East have worsened the options for patients seeking TB diagnosis and treatment.

Ukraine had one of the world’s worst TB epidemics even before Russia invaded the country in February. Health experts fear the inability of patients to get treated could fuel the rise of more drug-resistant TB across the region.

While TB patients displaced by the war can seek care in Ukraine, the country has seen a shortage of key medicines and authorities face challenges in keeping track of patients.

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