Three out of four Americans believe children should be vaccinated against measles even if their parents object, a Reuters/Ipsos poll found, showing little sympathy for the anti-vaccination movement that U.S. officials blame for the ongoing outbreak.Some 764 cases of the disease have been confirmed in the United States so far this year, the most seen in 25 years, in an outbreak that public health officials have called “completely avoidable” and largely linked to misinformation campaigns against the vaccines. A small but vocal community of parents refuse to vaccinate their children, citing concerns about the injections that are not supported by science. But the Reuters/Ipsos poll showed U.S. adults by a wide majority share the scientific consensus that the highly contagious and sometimes deadly disease is dangerous, while vaccines are safe.