infectiousness

Unfortunately, swine flu's infectiousness and the globalized flow of human travel make for a very dangerous combination.

不幸的是，猪流感的传和人员流动的全球化形成了一个非常危险的组合。

Catches an illness the flowering branch to have the mutual infectiousness, but died of old age the flowering branch is easy to have the ethylene acceleration deterioration.

枝具有互的感，凋谢的枝易产生乙烯加速衰败。