A delay can be characteristic of infectious diseases.Logical formLearned from4 sentences. A medium can be for spreading infectious diseases.Logical formLearned from4 sentences. Persons may deal with an infectious agent.Logical formLearned from4 sentences. A threat may be posed by emerging infectious diseases.Logical formLearned from4 sentences. An infectious disease can be transmitted.Logical formLearned from4 sentences. Vaccines may provide means of preventing illness.Logical formLearned from4 sentences. An infectious disease may undergo an introduction.Logical formLearned from4 sentences. Estimates of a risk of transmission of infectious diseases may be based on a frequency of infectious diseases.Logical formLearned from4 sentences. Health can be for a prevention of infectious diseases.Logical formLearned from4 sentences. Data may be published in an issue of emerging infectious diseases.Logical formLearned from4 sentences. Infectious agents can be recognized.Logical formLearned from4 sentences. Infectious agents may undergo an acquisition.Logical formLearned from4 sentences. Some problem can be a spread of infectious diseases.Logical formLearned from4 sentences. A risk can be for exposure to infectious agents.Logical formLearned from4 sentences. Infectious disease can be among young persons.Logical formLearned from4 sentences.