evidence: Investigators from Kaiser Permanente publish their findings showing that patients with a body mass index (BMI) of 40 to 44 kg/m2 have a risk of death from COVID-19 that is more than twice that of individuals whose BMI is 18.5 to 24 mg/m2. An abundance of comprehensive patient data enabled the team to isolate obesity’s effects compared with those resulting from more than 20 comorbidities, health care use, and population density, among others. At the heart of this finding is that excess fat exacerbates the breathing issues brought on by COVID-19. [...] Pfizer and BioNTech submit their COVID-19 vaccine to the FDA for an EUA, making them the first companies to seek such an approval in the United States. The EUA submission includes safety data on about 100 children between the ages of 12 and 15 years.