摘要:To the Editor: The recent report by Hanna et al1of theimportation of measles highlights the problem of commoninfectious diseases being inadvertently introduced intothis country. Smallpox vaccination used to be a conditionof entry into Australia. Since its abolition we have becomesomewhat complacent about the possibility of (relativelycommon) infectious diseases being imported into thiscountry and have overlooked the fact that many migrantswho come here have different 'immunity profiles' from thelocal population. This appears to be the case for measlesand is certainly the case for rubella