Moderna has begun dosing patients in a mid-to-late stage study of its CCP virus vaccine, mRNA-1273, in children aged six months to less than 12 years, the company said on Tuesday. The study will assess the safety and effectiveness of two doses of mRNA-1273 given 28 days apart and intends to enroll about 6,750 children in the United States and Canada. Sweden Is Latest Country to Halt Using AstraZeneca Vaccine Sweden is pausing the use of the AstraZeneca CCP (Chinese Communist Party) virus vaccine as a precautionary measure amid concerns about reports of blood clots in some recipients in Europe. A growing number of European countries—including Germany, France, Italy, and Spain—have suspended the use of AstraZeneca’s vaccine, though the company and international regulators say there is no evidence the shot is to blame for the blood clots. Masks and Distancing Required for Roadside Spectators During Torch Relay Tokyo Olympic organizers …