In a story that demonstrates how the entire global economy is interlinked, the FDA recently gave full approval to Pfizer’s ($PFE@US) COVID-19 vaccine, and oil is gaining on expectations of increased demand. U.S. health officials believe that FDA approval will convince the unvaccinated to get the shot. Oil demand should grow as more workers return to the office—especially as China succeeds in combating the Delta Variant. Brent crude futures were up 1.6% at press time, while WTI gained 1.5%.