percentage of reduced spread

Compared to no social distancing, quarantine bubbles would delay the peak of infections by 37%, decrease the height of the peak by 60% and result in 30% fewer infected individuals overall.

Other countries are starting to incorporate quaranteams in their prevention guidelines now that infection rates are low and contact tracing programs are in place. England is the latest country to announce quaranteam guidance with their support bubble policy.

New Zealand implemented a quarantine bubble strategy in early May and it seems to have worked.

https://theconversation.com/quarantine-bubbles-when-done-right-limit-coronavirus-risk-and-help-fight-loneliness-140134