Airplane and Ship Paths: Sweden

 

Screenshot was taken after one in-game year after starting in Norway

 

Close up view of Norway

 

 Airplanes:

• N/A

Ships:

• Iceland
• UK
• Greenland

Based on the data above:

• You can infect 3 countries by ship. No plane infections because Norway has no airport. You also infect 4 countries by land(Sweden, Finland, Russia, Germany)