You are given a sentence in English. Your job is to translate the English sentence into Japanese.

[EX Q]: This worked well for most pathogens, somewhat well for crafty bugs like flu, but not at all for HIV, for which humans have no natural immunity.
[EX A]: この方法は多くの病原体に対して有効でやっかいなインフルエンザにもなんとか使えますが人間が天然の免疫を持たない HIVにはまったく効果がありません

[EX Q]: What was that about?
[EX A]: それはどういう話でしたか ？

[EX Q]: (Laughter) What the f —? (Laughter)
[EX A]:
（ 笑 ） ｆ ・・・ （ 笑 ）

