Is this specific sentence referring to this sequence of events?
Mechanism 1: Player A's disc
Mechanism 2: basket
Mechanism 3: Player B's disc
Hence the virus would need to be passed on through all three mechanisms, before having an opportunity to find a human host.
At least, that's how I interpreted it... just curious.
Mechanism 1: Player A (sneeze/cough) to chains
Mechanism 2: Direct contact to Player B's hand from chains
Mechanism 3: Player B hands to face/nose/eyes
Or more likely at least four
Mechanism 1: Mouth (sneeze/cough) to chains
Mechanism 2: Chain to Player B disc
Mechanism 3: Player B disc to Player B hand
Mechanism 4: Player B hand to Player B mouth/nose/eyes
But here is the most likely scenario. I am assuming someone should not sneeze/cough right onto the chains.
Mechanism 1: Player A hands to Player A disc
Mechanism 2: Player A disc to chains
Mechanism 3: Chains to Player B disc
Mechanism 4: Player B disc to Player B hand
Mechanism 5: Player B hand to Player B mouth/nose/eyes
The way I see it, that leaves the following questions/variables
-How many players are actually infected
-What percentage of time does the virus, of the above population, transfer to each of the surfaces
-How does cold/wind/chain agitation impact the transfer percentage
I am not advocating playing or not, just thinking out loud.