How come আপনি can't get infected দ্বারা walker blood transmitted via the eyes, nose, ears অথবা mouth? I know আপনি can get infected either দ্বারা a bite অথবা a scratch. The characters get splattered with blood with each kill but live to fight another day. Thanks!

I think under the premise of this show, the bite floods আপনি with a massive dose of the infection which makes আপনি sick and die. Then is it the dying that actually triggers the change because as the scientist told Rick in season 1, everyone is already infected with the virus itself and it triggers in death. That's also why they do the double kill to someone who hasn't turned yet.

Everyone is already infected with the virus (Jenner ব্যক্ত so to Rick). So the bite অথবা the scratch doesn't infect you, because you're already infected, it only gets আপনি sick (fever) and then the fever kills you. Like laylastepford said, the virus gets triggered once you're dead only.