“Public health officials say that unvaccinated children pose a big danger to those around them and even threaten the health of fully vaccinated children and adults because vaccines can fail to prevent infection in vaccinated persons. Today, the most common argument used to justify ‘no exceptions’ mandatory vaccination laws is that unvaccinated people pose a serious health threat to others who ‘cannot be vaccinated,’ such as the immunocompromised.
Some parents of unvaccinated children are asking the opposite question: Could my unvaccinated or immune compromised child get sick from coming in contact with a recently vaccinated person? When it comes to live virus vaccines, the short answer is: Yes.
During a viral infection, live virus is shed in the body fluids of those who are infected for varying amounts of time and can be transmitted to others. Vaccine strain live virus is also shed for varying amounts of time in the body fluids of vaccinated people and can be transmitted to others.”
— Barbara Loe Fisher, National Vaccine Information Center (NVIC)
Courtesy: The Outliers