COVID-19 cases have been increasing again in the U.K. due to the spread of the Delta variant. England’s chief medical officer Chris Whitty warns the variant may cause more cases of “long COVID,” especially in young people. (Business Insider)

The Pfizer COVID-19 vaccine may be less effective in preventing cases from the Delta variant, a new study finds. Early data from Israel shows the vaccine had a 64% efficacy in preventing cases, though it was 94% protective against hospitalizations from the variant. (POLITICO)

Moderna has begun a Phase I/II study to examine mRNA1010, a seasonal flu vaccine, in its efforts to build upon its vaccine offerings. mRNA1010 aims to target influenza A H1N1, H3N2 and other strains. (Endpoints News)

Dollar General has hired its first chief medical officer as part of a larger plan to branch into healthcare. The company also plans to place more healthcare items in the stores, including cold and cough medication, due to customers’ desire for affordable health products. (CNBC Weekly)

New Fitbit data shows that people who contracted COVID-19 experienced behavioral and physiological changes for several weeks or months afterwards. The study suggests wearable devices may be one way to track how people are affected by the virus long-term. (The New York Times)