Why are most cases of polio vaccine-derived variants? Most cases of paralytic polio are now vaccine-derived due to the success of the Global Polio Eradication Initiative. OPV has been instrumental in the near-eradication of wild polioviruses around the world. However, in areas where vaccination rates drop and enough people are …

CNN  —  Ah, holiday travel. Between huge crowds and weather delays, flying during this time of year is hectic. Now close your eyes and imagine the entire scenario with one additional annoyance: Loud talkers yammering into their cell phones at 35,000 feet. Don’t worry – this potentially ear-splitting scenario isn’t …

Elizabeth Alexander and John Bayley loved their partners to the end. Source link