It is very different if you have high transmission probability per hour, but not if you have low.
For example, if I had a 50% chance of catching covid from a 15 minute interaction, conditional on the other person having covid, then if I spent 2 hours with that person, my risk still can’t go above 100% times the chance that they have covid. On the other hand, if I spent that 2 hour period with eight sequential people, my risk can be up to eight times higher.
Right now, the tool estimates that if you spend an hour with a single person indoors who has covid, masked and vaccinated, the chance that you get covid is about 0.1%. This is low enough that the difference between one person continuously vs several seriously is not significant.
It is very different if you have high transmission probability per hour, but not if you have low.
For example, if I had a 50% chance of catching covid from a 15 minute interaction, conditional on the other person having covid, then if I spent 2 hours with that person, my risk still can’t go above 100% times the chance that they have covid. On the other hand, if I spent that 2 hour period with eight sequential people, my risk can be up to eight times higher.
Right now, the tool estimates that if you spend an hour with a single person indoors who has covid, masked and vaccinated, the chance that you get covid is about 0.1%. This is low enough that the difference between one person continuously vs several seriously is not significant.