1. The flu virus infected almost the entire class.
    全班几乎人人都染上了流行性感冒病毒。

2. The next logical experiment would have been to allow an infected mosquito to bite a healthy person.
    按照逻辑，下一个实验是让一个受到感染的蚊子去叮咬一个健康人。

3. Another 185,000 of the one million infected with the HIV virus are also expected to die.
    此外，100万感染艾滋病毒的人当中有18.5万人也将不久于人世。

4. My brother has infected me with a bad cold.
    我哥哥把重感冒传染给我。

5. Ross first wanted to answer the simple question whether plasmodium could be found in a mosquito after it had bitten a malaria-infected person.
    罗斯首先要回答在蚊子叮咬过被疟疾感染过的人后，会不会在蚊子体内发现疟原虫这一简单问题。