How effective are lockdowns, and how long do they take to work? Here’s is our take on the Italian experience, finally out on EID (online first version) at wwwnc.cdc.gov/eid/article/27…
The reproduction number fell below 1 two wks after lockdown and stabilized at 0.76 after 3wks. 1/8

Great thread describing the COVID-19 epidemic in Israel and the effect of the two lockdowns

From South Korea:

'Symptom screening fails to identify most COVID-19 cases in children, and SARS-CoV-2 RNA in children is detected for an unexpectedly long time.'

We are relying on symptom screening in Ontario schools.

@etfopresident Elementary Educators

jamanetwork.com/journals/jamap…

Computational social science (CSS) has exploded in prominence over the past decade, with thousands of papers published using observational data, experimental designs, and large-scale simulations that were once unfeasible or unavailable to researchers.
science.sciencemag.org/content/369/65…

Nice introduction to epi modeling by Ottar Bjornstad and colleagues nature.com/articles/s4159…

.World Health Organization (WHO) is establishing a Science Council to support us delivering #HealthForAll & keeping the world safe through advances in science & technology.
I invite all relevant scientist to apply for membership by 14 Sept 2020
bit.ly/3aGCq5n

A first case of #COVID19 reinfection from HKU, with distinct virus genome sequences in 1st and 2nd infection (142 days apart). Kudos to the scientists for this study.

This is no cause for alarm - this is a textbook example of how immunity should work.

(1/n)

Glad to see that other groups are working on this topic outside China and results are roughly in line with ours (medrxiv.org/content/10.110…)

IU public health expert Dr. Ana Bento has joined the World Health Organization group as an advisor on COVID-19 and schools: go.iu.edu/3ak1.

First results of REACT research out today; three papers on validity, usability & prevalence (2 published, 1 preprint) with Graham Cooke
Thread with key findings of study of 100,000 randomly selected adults who used a home test for IgG antibodies

1/6

imperial.ac.uk/medicine/resea…

Glad to see our preprint mentioned in this very nice Science editorial: science.sciencemag.org/content/369/65…

It's great to see our paper on second wave scenarios (very timely!) of #COVID19 out in Nature Human Behaviour today. We show that testing work, but only if accompanied by tracing & household quarantine (panel g below). Main at rdcu.be/b55RH (see also SM for more scenarios)

By using contact tracing data from Hunan, China, we found no statistically significant differences in transmissibility between children and adults medrxiv.org/content/10.110…

Impact of timing in the implementation of NPIs to contain a COVID-19 outbreak - Insights from Sichuan, China in our latest preprint medrxiv.org/content/10.110…

(1/7) Worrying indications that the second wave of COVID-19 has now begun in Hong Kong, with more than 50 local infections being identified in the past few days and a large number expected to be reported later today.

“Estimating the establishment of local transmission and the cryptic phase of the COVID-19 pandemic in the USA”
medrxiv.org/content/10.110…

Last work, with a dream team Michele Starnini Aleta Michele Tizzoni 🇺🇦, now out: medrxiv.org/content/10.110…. We quantify the biases caused by the use of inaccurate data in the estimation of R(t) and advocate for estimating it using only real time-series of dates of #COVID19 symptoms' onset.

This is why we need to learn much more about “correlates of protection” against SARS-CoV-2 beyond serology, quickly