[BostonCard]

Just because we can't contact trace doesn't mean it can't be done in other countries.  Here are the results of contact tracing in China:

https://www.medrxiv.org/content/10.1101/...20053058v1

Among the identified outbreaks, 53.8% involved three cases, 26.4% involved four cases, and only 1.6% involved ten or more cases. Home outbreaks were the dominant category (254 of 318 outbreaks; 79.9%), followed by transport (108; 34.0%; note that many outbreaks involved more than one venue category). Most home outbreaks involved three to five cases. We identified only a single outbreak in an outdoor environment, which involved two cases.

and Japan:

https://www.medrxiv.org/content/10.1101/...20029272v2

The odds that a primary case transmitted COVID-19 in a closed environment was 18.7 times greater compared to an open-air environment (95% confidence interval [CI]: 6.0, 57.9).

BC

[BostonCard]

Just because we can't contact trace doesn't mean it can't be done in other countries.  Here are the results of contact tracing in China:

https://www.medrxiv.org/content/10.1101/...20053058v1

Among the identified outbreaks, 53.8% involved three cases, 26.4% involved four cases, and only 1.6% involved ten or more cases. Home outbreaks were the dominant category (254 of 318 outbreaks; 79.9%), followed by transport (108; 34.0%; note that many outbreaks involved more than one venue category). Most home outbreaks involved three to five cases. We identified only a single outbreak in an outdoor environment, which involved two cases.

and Japan:

https://www.medrxiv.org/content/10.1101/...20029272v2

The odds that a primary case transmitted COVID-19 in a closed environment was 18.7 times greater compared to an open-air environment (95% confidence interval [CI]: 6.0, 57.9).

BC