The top executives of nine drugmakers likely to produce the first vaccines against the new coronavirus signed an unprecedented pledge meant to boost public confidence in any approved vaccines. Meanwhile, public health officials have expressed doubt that adequate data on vaccine safety and effectiveness would be available before November. BioNTech has partnered with Pfizer on one of the three vaccines now in the final round of human testing. The country already has a small, but vocal, group of “anti-vaxxers” who oppose giving their children the many standard vaccines. They added that extra transparency on testing results and the approval process is needed.