On July 27, 2021, CDC released updated guidance on the need for urgently increasing COVID-19 vaccination coverage and a recommendation for everyone in areas of substantial or high transmission to wear a mask in public indoor places, even if they are fully vaccinated. CDC issued this new guidance due to several concerning developments and […]
Flooding in Germany. Massive fires in California and Oregon. Searing temperatures killing people globally. Voter suppression and political obstruction…and COVID denial in the face of soaring cases. Sometimes I feel growing despair, feeling helpless that I can’t try to impact each of these individually, let alone all happening simultaneously. This […]
Key findings: With no SARS-CoV-2 testing or screening (base case scenario), there would be 649 (95% uncertainty interval [UI] 505-950) actively infectious passengers on the day of travel among 100,000 passengers and 8,357 (95% UI 6,144-12,831) infectious days (Figure). Compared with the base case: Pre-travel PCR testing alone would reduce […]
