问6：呼吸防护口罩能够防细菌和病毒这类病原微生物么？
Q6: Can respirators protect you from biological agents such as bacteria or viruses?
所述封闭元件是一个防病毒、防细菌及防孢子的薄膜，它位于端面上且至少部分地位于所述凹陷上。
The closing element is a virus-tight, bacteria-tight and spore-tight film which lies on the front surface and at least partially over the recess.
科学家说，导致结核病的细菌在世界不同地方的遗传结构是如此不同，因此防控结核病可能需要为不同地区研制不同的疫苗。
The bacterium that causes tuberculosis (TB) is so genetically distinct in different parts of the world that tackling the disease could require separate vaccines for each region, say researchers.
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