Amsterdam limited (sic, limits) contact investigation, there is also a risk of a national capacity shortage

[link to translate.google.com (secure)]

Some interesting reference points in the article:
- "training the new researchers takes three to four weeks."
- "In practice, one source and contact study appears to take more than twice as much time, namely 12 hours."

So this means that for efficient contact tracing you will need 1.5 contact tracer days in followup (Assuming 8 hour work day). At the time you start getting overwhelmed it takes 3-4 weeks to scale up, in those same 3-4 weeks you can see cases double 3 or 4 times.

Combine that with the above data about taking multiple days to setup a testing site at a point of outbreak etc.

Winter is coming...