Laughter can be infectious.Logical formLearned from51 sentences. A giggle can be infectious.Logical formLearned from51 sentences. Infectious diseases can be tropical.Logical formLearned from50 sentences. A rhythm can be infectious.Logical formLearned from50 sentences. An infectious disease may be caused by a virus.Logical formLearned from49 sentences. A love can be infectious.Logical formLearned from49 sentences. Wastes can be infectious.Logical formLearned from49 sentences. A case can be infectious.Logical formLearned from49 sentences. Research can be on infectious diseases.Logical formLearned from48 sentences. Diseases can be infectious.Logical formLearned from48 sentences. A passion can be infectious.Logical formLearned from47 sentences. Anthrax can be an infectious disease.Logical formLearned from47 sentences. A condition can be infectious.Logical formLearned from46 sentences. A sound can be infectious.Logical formLearned from46 sentences. Tunes can be infectious.Logical formLearned from44 sentences.