A patient may infect others.Logical formLearned from3 sentences. Some persons may be infected on a plane.Logical formLearned from3 sentences. Greens may be infected by a fungus.Logical formLearned from3 sentences. A couple may be infected by a patient.Logical formLearned from3 sentences. A patient may infect dozens of staff.Logical formLearned from3 sentences. A number of staff may be infected with (respiratory syndrome).Logical formLearned from3 sentences. (Air travelers) may be infected in a world-city.Logical formLearned from3 sentences. Students may be infected by relatives.Logical formLearned from3 sentences. A (mystery disease) may infect some students.Logical formLearned from3 sentences. Some persons may be infected by a professor.Logical formLearned from3 sentences. A virus may infect an (e-mail server).Logical formLearned from3 sentences. An e-mail may be infected with a virus.Logical formLearned from3 sentences. Mothers may be infected with an illness.Logical formLearned from3 sentences. Livestock may be infected with a virus.Logical formLearned from3 sentences. An industry may infect thousands of persons with a virus.Logical formLearned from3 sentences.