Maryland residents may rush to get a COVID-19 vaccine when it becomes available. Yet, as companies race to develop a COVID-19 vaccine, questions about the risks of a vaccine have been raised. All vaccines carry some risk for residents of a Maryland medication error, and according to a recent news report, many experts have speculated on the heightened risks of a COVID-19 vaccine in light of a condensed development timeline.
Experts in the public health field worry that a condensed timeline for developing and testing the vaccine might mean that it is approved without proper data and analysis. Some of those fears appear to have merit. One vaccine testing candidate did not test in animals. Another experimental vaccine was approved for China’s military before trials were even completed. A significant number of people in one vaccine trial experienced a “medically significant” adverse event. Creating a vaccine in the span of a year is “unprecedented,” according to one expert working to develop a new vaccine platform.
Some experts worry that the vaccine will not be safe or effective. A vaccine might produce unintended side effects, for example. One adverse event that had been seen with vaccines for other viruses is an antibody-dependent enhancement (ADE). An ADE is an immune reaction to the vaccine that makes subsequent exposure to the virus more dangerous by generating antibodies that encourage the virus to replicate instead of neutralizing it. One scientist said that the rare side effects of a vaccine likely will not be discovered until after the vaccine is approved.