infection route; transmission route
Commonly used in medical and epidemiological contexts to refer to the path by which an infection spreads. Synonymous with 感染経路.
See also: 感染経路
It is difficult to identify the transmission route of the new virus.
The public health center is investigating the infection route.
Compound of 感染 (kansen, 'infection') and ルート (rūto, from English 'route').