WEDNESDAY, July 22, 2020 (HealthDay News) -- Hopes for robust, long-term antibody protection after a bout of COVID-19 have been dampened by a new study that finds the protection may only last a few months. Still, experts noted that the body's immune system has more than one way to defend against viruses it has already encountered, so the findings don't dash hopes for a vaccine. "Infection with this coronavirus does not necessarily generate lifetime immunity," Dr. Buddy Creech, an infectious disease specialist at Vanderbilt University in Nashville, told the Associated Press. But antibodies are only part of the immune system's armamentarium, added Creech, who wasn't part of the new research. The study was published July 21 in the New England Journal of Medicine. Researchers led by...