Vaccine-Derived Polio
In order to prevent the risk of vaccine-derived polio, the United States has discontinued the use of the oral polio vaccine. This decision was made due to the possibility of the live virus used in the vaccine mutating and spreading among those who have not been vaccinated. The mutated virus can then cause the same symptoms and illnesses as naturally occurring polio.
Live vaccines, such as the oral polio vaccine, are typically not administered in regions where the natural polio virus has been eradicated. This precaution significantly reduces the chances of vaccine-derived polio spreading. It is important to note that this particular form of polio can only be transmitted in areas with low vaccination rates.
Who Is Most Vulnerable to Polio?
The risk of contracting polio is highest among individuals who have not been vaccinated. However, certain vaccinated individuals are also more susceptible than others. If you plan to travel to regions where polio is still prevalent or work in a lab or healthcare facility where you may be exposed to the poliovirus, it is advisable to consider a booster vaccination.