Courage can be contagious.Logical formLearned from65 sentences. A (livestock disease) can be contagious.Logical formLearned from64 sentences. Anthrax can be contagious.Logical formLearned from61 sentences. A respiratory illness can be contagious.Logical formLearned from58 sentences. A person can be contagious.Logical formLearned from58 sentences. An attitude can be contagious.Logical formLearned from57 sentences. Yawns can be contagious.Logical formLearned from56 sentences. A joy can be contagious.Logical formLearned from55 sentences. Laughter can be contagious.Logical formLearned from53 sentences. Enthusiasm can be contagious.Logical formLearned from53 sentences. A condition can be contagious.Logical formLearned from49 sentences. A (bird flu) can be contagious.Logical formLearned from49 sentences. A bacterial disease can be contagious.Logical formLearned from47 sentences. A fever can be contagious.Logical formLearned from46 sentences. (Animal diseases) can be contagious.Logical formLearned from45 sentences.