[throwawaysea]

A virus is a separate agent from the people you allege are committing manslaughter. A virus is a background condition, like a weather event. An asymptomatic human shouldn’t be considered the agent committing a crime in your scenario, because they’re under no obligation to make changes to THEIR body to make YOU comfortable with a background environmental condition.

[magicfractal]

And they would be indeed under no such obligation (their body, their choice) but if the worst happens it would be their responsibility.