Doctors told Xue that it was almost impossible to cure chronic bronchitis and such problems may be alleviated with medication.

This prohibition includes Marek's vaccine, specifically designed for a type of avian disease, and a quadruple vaccine against other diseases such as Gumboro, Newcastle, bronchitis and reovirus.

Pada tahun 2013, penyakit pneumoconiosis ( penyakit paru paru hitam) di kalangan pekerja batubara mengakibatkan 25.000 kematian secara global. Di Uni Eropa, pembakaran batubara bertanggung jawab atas 18.200 kematian dini dan 8.5000 kasus baru bronchitis akut per tahun.