Mobility network models of COVID-19 explain inequities and inform reopening Nature. From the abstract: “Derived from cell phone data, our mobility networks map the hourly movements of 98 million people from neighborhoods (census block groups, or CBGs) to points of interest (POIs) such as restaurants and religious establishments, connecting 57k CBGs to 553k POIs with 5.4 billion hourly edges. We show that by integrating these networks, a relatively simple SEIR model can accurately fit the real case trajectory, despite substantial changes in population behavior over time. Our model predicts that a small minority of ‘superspreader’ POIs account for a large majority of infections and that restricting maximum occupancy at each POI is more effective than uniformly reducing mobility.” Short bars.
"[For] industrial security & national security, we must focus on building production chains and supply chains that are independently controllable (自主可控), secure and reliable, and strive for important products and supply channels to all have at least one alternative source" 2/
Yesterday Premier Li told the State Council that Beijing's various supply-side measures have played "a key role in stabilizing economic fundamentals". He pledged to implement more such policies, but said little, as far as I can tell, about…https://t.co/2ggXrdmiBC
Moscow braced for anti-Russian rhetoric and more confrontation FT. “‘We expect a massive toughening of the stance towards Russia,’ a high-ranking western diplomat in Washington told the Financial Times. ‘There is a hatred for Russia amongst [Biden’s team] that is really amazing. It’s not just rational; it’s also very emotional.’” High on their own supply…
An Outbreak of Covid-19 on an Aircraft Carrier NEJM. The Conclusions: “SARS-CoV-2 spread quickly among the crew of the U.S.S. Theodore Roosevelt. Transmission was facilitated by close-quarters conditions and by asymptomatic and presymptomatic infected crew members. Nearly half of those who tested positive for the virus never had symptoms.”