The possibility of a human-to-human transmission of the hantavirus — the deadly virus that fatally infected some passengers on a luxury cruise ship — is low, even if an infected patient were to enter the country, the health ministry said Wednesday.“This risk assessment indicates that a human-to-human transmission of the hantavirus has not been reported — except for certain strains of the virus — and that transmission can be controlled through appropriate measures,” the health ministry said in a statement, based on an evaluation made by the Japan Institute for Health Security. “Therefore, even if an infected passenger were to enter Japan, the likelihood of widespread, domestic person-to-person transmission is considered low,” the statement added.