A disease may be caused by a virus.Logical formLearned from114 sentences. A virus may claim some lives.Logical formLearned from114 sentences. Information can be about a virus.Logical formLearned from114 sentences. A spread may pertain-to a (bird flu virus).Logical formLearned from114 sentences. Protection can be against a virus.Logical formLearned from113 sentences. Viruses can be malicious.Logical formLearned from110 sentences. Children can be with a virus.Logical formLearned from110 sentences. Outbreaks may pertain-to a virus.Logical formLearned from110 sentences. A virus can be simple.Logical formLearned from109 sentences. Viruses may spread.Logical formLearned from109 sentences. Symptoms may pertain-to a virus.Logical formLearned from109 sentences. A virus can be deadly.Logical formLearned from108 sentences. A virus may cause cervical cancer.Logical formLearned from108 sentences. A resurgence may pertain-to a virus.Logical formLearned from108 sentences. Tests can be for a virus.Logical formLearned from107 sentences.