Q: infectious と virulent はどう違いますか?
A: Infectious means that a disease is capable of spreading.
Additionally, if something is highly infectious, it means it spreads to people very easily.
Virulent means that a disease/pathogen is very aggressive, harmful or deadly. Often virulent pathogens are not as easily passed on, because they kill their host quickly and have less chance to spread, where as highly infectious diseases may spread more because the host exposes the virus to more people (which it couldn’t do if it died too quickly.)
You could say ebola is highly virulent, but not highly infectious because it needs to be passes through body fluids.
Q: infectious と contagious はどう違いますか?
A: Infectious:

"Be careful, a zombie has an infectious bite. Once you're infected there's no cure."

"Don't drink from my cup, my disease is highly contagious, you might even get sick too."
Q: infectious と contagious はどう違いますか?
A: Infectious describes diseases that are contracted through the environment. someone who is ill with an infectious, non-contagious disease can not spread the disease by physical contact.

Contagious is used whe it spread from a patient to another.
Q: infectious と contagious はどう違いますか?
A: They mean pretty much the same thing. Contagious is just mainly through physical contact
Q: infectious と contagious はどう違いますか?
A: In part of the states I'm from, I'm pretty sure that it is the opposite. Or they are practically synonymous with each other.


Q: infectious は 英語 (アメリカ) で何と言いますか?
A: QAの全文をご確認ください