The authors analyzed data on 444 imported cases of methicillin-resistant Staphylococcus aureus (MRSA) in Sweden during the period 2000-2003. The risk for MRSA carriage or infection in returning travellers ranged from 0.1 per million travellers returning from Nordic countries to 59.4 per million travellers returning from North Africa and the Middle East. 

Artemisinin resistance in falciparum malaria has emerged in western Cambodia exactly where chloroquine resistance arose 50 years ago. Similarly to the resistance to chloroquine that spread to Africa, the experts are wondering whether artemisinin resistance will spread as widely. In such a case the consequences would be disastrous.