the staff of the Ridgewood blog
New Brunswick NJ, according to Johns Hopkins Center for Health Security two major vaccine trials, those of AstraZeneca and Johnson & Johnson, are positioned to restart after being paused over potential safety concerns. The AstraZeneca trial was paused on September 6th, but after independent monitoring of the adverse event several trial sites in other countries resumed later in September. The US FDA held off on restarting AstraZeneca trial sites in the US through October in order to further investigate the event with their own team. The Johnson & Johnson vaccine trial was paused on October 11 after a participant suffered a stroke. This adverse event was also independently reviewed and a final report was sent to the US FDA that recommends the vaccine trial continue. The Johnson & Johnson trial can start re-enrolling participants as early as next week. This vaccine is of particular interest to many since it is a one-dose vaccine which would greatly simplify the process of quickly inoculating millions of people. The AstraZeneca vaccine has already shown promising preliminary results and seems to produce an immunogenic response in elderly participants as well as in younger ones. It is important that any eventual vaccine can produce immunogenic responses in the eldery, in children, and in those with underlying conditions. The Pfizer vaccine has begun to enroll a cohort of children between the ages of 12-18 to test its efficacy in this age group. 16- and 17-year-old volunteers are the first to be enrolled in this study, with researchers soon looking to enroll their younger peers.
