You need to read the article. That is EXACTLY the opposite of what it says.
and yes the source of infection for that first case may had been also an unvaccinated person that is not immunodeficient
But the fact stands, it is a Vaccine strain Virus that it's source is a vaccinated person that infected those children and other regardless if their parents didn't vaccinated them or they are children immunodeficient that cant be vaccinated to begin with
so they can claim that is the vaccine that gave the illness to their immunodeficient child similar with the claims and accusations of unvacinated children infecting immunodeficient children with wild viruses