There is no guarantee that a person-to-person virus would be benign, scientists say, and vaccines and treatments at hand may not be sufficient.There is no guarantee that a person-to-person virus would be benign, scientists say, and vaccines and treatments at hand may not be sufficient.Read Moreyour-feed-science, Avian Influenza, Vaccination and Immunization, Disease Rates, Workplace Hazards and Violations, Tamiflu (Drug), Livestock, CSL LtdNYT > Health