The World Health Organization (WHO) vaccine advisory group today recommended the AstraZeneca-Oxford vaccine for emergency use, a key development that clears the way for lower- and middle-income countries to receive their first deliveries from the COVAX program.In other global developments, the WHO said in a weekly update that overall cases and deaths show more signs of decline, a promising development, though cases are rising in some nations and more countries are reporting the detection of variant SARS-CoV-2 viruses.SAGE suggests longer vaccine dosing intervalAt a briefing today, Alejandro Cravioto, MD, PhD, who chairs the WHO's Strategic Advisory Group of Experts on Immunization (SAGE), said that after a review, the group recommends the