US CDC will not publish report showing COVID vaccine effectivenessApril 22 - A report showing the efficacy of COVID-19 vaccines has been ​blocked from being published in the U.S. Centers for Disease Control ‌and Prevention's flagship scientific journal, a spokesperson from the Department of Health and Human Services said on Wednesday."Scientific reports are routinely reviewed at multiple levels to ensure they ​meet the highest standards before publication," said HHS spokesperson Andrew Nixon.Keep up with the latest medical breakthroughs and healthcare trends with Health Rounds newsletter. Sign up here.