Air travel itself carries only very minimal risks of infection with TB of any kind.
航空旅行本身只具有极小的感染任何类型结核的风险。
2
The battle of the laboratories held fateful risks for us as well as the battles of the air, land, and sea, and we have now won the battle of the laboratories as we have won other battles.
These are risks like HIV infection, malnutrition, diabetes, smoking, alcohol and substance abuse, indoor air pollution and, above all, limited access to basic care for the poorest people.