Factors Associated with Diagnostic Delay of Pulmonary Tuberculosis in China

Tuberculosis（TB） remains a major public health threat; approximately 10 million new TB cases are recorded worldwide, and more than 1.2 million deaths were caused by TB in 2019 [1] . The diagnostic delay presents a major obstacle to the control of the TB epidemic. This is a serious concern because each patient may infect 10–15 people each year,