Influenza B almost exclusively infects humans and is less common than influenza A. Vaccines and drugs are available for the prophylaxis and treatment of influenza virus infections. Among the plethora of diseases that caused childhood death were measles, influenza and smallpox. Regular vaccination against pneumonia, influenza, and pertussis are generally advised. Funds aim to support communities in preparing for public health emergencies, including pandemic influenza. Recommendations involve restructuring commercial markets to improve biosecurity against avian influenza. Umifenovir inhibits membrane fusion of influenza virus. Many cases of croup are preventable by immunization for influenza and diphtheria. The vaccine is usually effective against three or four types of influenza. Animal tests for antibodies to ebola, malaria, influenza, and hepatitis were underway. Vansina estimated that five percent of the Congolese population perished from swine influenza. Many cases of croup have been prevented by immunization for influenza and diphtheria. Croup can be caused by a number of viruses including parainfluenza and influenza virus. Falcons are known to be very susceptible to avian influenza. Resources were limited and outbreaks of influenza and rubella were common.