You spread the virus even before you are sick by delt…

Not a runny nose, not even a small cough. Anyone infected with the delta variant spreads the virus two days before the first symptom appears. That is more than twice as long as with previous variants. It explains why this variant is such a fierce flame, says virologist Marc Van Ranst (KU Leuven). “Especially good ventilation can dampen the spread somewhat.”

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The delta variant of the coronavirus has rapidly become the dominant one. That rapid spread may have been fueled by people who were feeling their best, new research from the …

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