Globally prominent Egyptian physician who developed life-saving vaccines passes away, is mourned by Bill Gates: Egyptian doctor Adel Mahmoud, who developed and / or championed several life-saving vaccines, passed away earlier this month in New York at age 76. “The world lost one of the greatest vaccine creators of our time,” Bill Gates said in a tweet on Thursday, mourning Mahmoud’s passing. Mahmoud has been credited with developing or playing key roles in the commercialization of vaccines that protect against rotavirus, shingles, HPV and a combination vaccine for measles, mumps, rubella, and chickenpox. The New York Times has a great obit, as does the Wall Street Journal.