When Am I Contagious With a Cold? The Science Behind Viral Spread
The first sniffle catches you off guard. You dismiss it as allergies, chalk it up to dry air—until your throat tightens and your nose runs like a faucet. By the time you reach for tissues, the question gnaws at you: *when am I contagious with a cold?* The answer isn’t as straightforward as you’d hope. … Read more
