A virus can be dangerous.Logical formLearned from291 sentences. A version may pertain-to a virus.Logical formLearned from284 sentences. Samples may pertain-to a virus.Logical formLearned from283 sentences. A (death toll) can be from a virus.Logical formLearned from281 sentences. A virus may be spreaded.Logical formLearned from280 sentences. Viruses can be cold.Logical formLearned from278 sentences. A virus may be detected.Logical formLearned from270 sentences. A strain can be constituted-of-or-filled-with virus.Logical formLearned from267 sentences. Persons can be with a virus.Logical formLearned from265 sentences. A virus may begin.Logical formLearned from262 sentences. Antibodies can be to a virus.Logical formLearned from259 sentences. A virus can be a strain.Logical formLearned from256 sentences. Outbreaks may pertain-to a virus.Logical formLearned from255 sentences. Some persons may be infected with a virus.Logical formLearned from248 sentences. A virus may be transmitted.Logical formLearned from243 sentences.