Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Top US Coronavirus Experts Endorse Prospective Vaccines Two of the leading U.S. coronavirus experts said Sunday they personally would have no worry about receiving either of the vaccines that are under final review, but voiced concern about the continuing skepticism of the American public. "These vaccines are highly effective," Moncef Slaoui, the chief scientific adviser for Operation Warp Speed, the U.S. government's effort to develop a coronavirus vaccine, told ABC's "This Week" show. "I feel very comfortable taking the vaccine." Vaccines developed separately by the drug-making teams at Pfizer-BioNTech and Moderna have shown 95% efficacy in tests and are now awaiting U.S. government approval for use generally as tens of thousands of new infections are being recorded in the United States each day. But national polls in the U.S. have shown that about four in 10 Americans remain uncertain about getting vaccinated. The government's review is likely to be completed in the next few weeks and millions of doses of the vaccines could be made available before the end of the year, initially for health care workers and the most vulnerable elderly in nursing homes. "I'm very concerned about that skepticism," Slaoui said. .