[M T]

As I said elsewhere, if you want to see L.A. County's plans and status for contact tracing, start at page 57 of  May 28 L.A. County's attestation that they should be opening up faster.

"As the number of new cases has grown to over 500 diagnosed each day [They had more than 1600 on May 26. But this section is dated May 11.] DPH has focused its case investigation and contact tracing efforts on those in settings with the highest risk of rapid spread and negative health outcomes. These high-risk settings include, but are not limited to, hospitals, skilled nursing facilities and other health care settings, correctional institutions, and other congregate residential facilities."

I read that as they abandoned any hope of tracking all cases.
"DPH anticipates an ongoing rise in the number of confirmed COVID-19 cases that will reach or exceed 2500 cases a day. In anticipation of a rise to this level, DPH projects needing approximately 2500 additional staff to support surge response in contact tracing. "

They use an estimate of 8 close contacts each.  Infectious period from 2 days before symptoms to 10 days after.
Hmm.,...  Santa Clara County wants to have 1000 to handle 75 cases a day, 40 close contacts each.  (My notes indicate that SCC was working to have 500 contact tracers by this week.)

[M T]

As I said elsewhere, if you want to see L.A. County's plans and status for contact tracing, start at page 57 of  May 28 L.A. County's attestation that they should be opening up faster.

"As the number of new cases has grown to over 500 diagnosed each day [They had more than 1600 on May 26. But this section is dated May 11.] DPH has focused its case investigation and contact tracing efforts on those in settings with the highest risk of rapid spread and negative health outcomes. These high-risk settings include, but are not limited to, hospitals, skilled nursing facilities and other health care settings, correctional institutions, and other congregate residential facilities."

I read that as they abandoned any hope of tracking all cases.
"DPH anticipates an ongoing rise in the number of confirmed COVID-19 cases that will reach or exceed 2500 cases a day. In anticipation of a rise to this level, DPH projects needing approximately 2500 additional staff to support surge response in contact tracing. "

They use an estimate of 8 close contacts each.  Infectious period from 2 days before symptoms to 10 days after.
Hmm.,...  Santa Clara County wants to have 1000 to handle 75 cases a day, 40 close contacts each.  (My notes indicate that SCC was working to have 500 contact tracers by this week.)