Good news: Mystery cases falling fast in Victoria, staying low in Sydney

Finally, some unexpectedly good news on community spread in Victoria:

Untrackable new cases in Victoria are drying up.  The incidence of community spread cases with an unknown source are every epidemiologists nightmare. So their absence is a marker of how well the restrictions work– and whether the “fire” is under control. It’s cheery news.

Community spread is the number that matters most — more than daily infections. Known cases can be track-and-traced. Unknown cases mean whole clusters are spreading invisibly and restrictions need to be wider. Despite the depressing schedule planned in Victoria, if this reduction in unknown cases is sustained, then other options for pandemic management become possible.  The NSW-style-management with intense tracking and tracing may suddenly become an option within weeks.  (Though there may be a 50 case spike tomorrow just to prove me wrong.) Tracking and tracing works best at lower levels, and becomes overwhelming quickly as the number of clusters rise.

With strong restrictions, the exponential rise in infections can become an exponential fall. Where before each person might infect three new people, now three people staying home are only infecting one (or something like that). Two lines get extinguished instead of amplified, as the virus […]

Rating: 0.0/10 (0 votes cast)

via JoNova

https://ift.tt/3h8FhW8

September 7, 2020 at 01:16PM

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s