lungs inflammation icon

airway alveolar asthma background bronchi bronchial bronchitis bronchus cancer china chronic clipart copd corona coronavirus cough coughing disease emphysema flu icon icons illness illustration infection inflamed inflammation influenza isolated line logo logos lung lungs medicinal medicine outline pain pictogram pleura pleural pleurisy pleuritic pneumonia pulmonary respiratory sars sick sign signs silhouette smoker symbol trachea tract tuberculosis unhealthy vector virus viruses way wuhan