Understanding 感染 (かんせん)
感染 means "infection" or "contagion" and is commonly used in medical or health-related contexts. It refers to the process by which a disease or virus spreads to a person or organism.
Usage and Nuance
When using 感染, speakers often imply the transmission of pathogens like viruses or bacteria. It is a formal term often seen in news reports, medical discussions, and official announcements.
Common Collocations and Patterns
- 感染する (かんせんする): to become infected
- 感染症 (かんせんしょう): infectious disease
- 感染拡大 (かんせんかくだい): spread of infection
- 感染経路 (かんせんけいろ): route of infection
These collocations are useful for discussing health topics, especially during epidemics or pandemics.
Register and Politeness
感染 is a neutral to formal noun. It is appropriate in both spoken and written language but is more common in formal or informational contexts rather than casual conversation.
Common Learner Mistake
Learners sometimes confuse 感染 with 伝染 (でんせん), which also means contagion but is less commonly used in modern Japanese and can sound more colloquial or old-fashioned. 感染 is the preferred term in medical and official contexts.