No mention of how many kids go to this school and how big is its catchment. I don't buy the:
"Lupiano eventually arrived at a single linking factor between himself, his wife and his sister: they each attended Colonia High School in Woodbridge in the 1990s"
In addition to the school, he and his sister share their parents genes. He and his wife lived in the same neighbourhood so they shared many other things too.
People on the flight were vaccinate OR tested negative. Not both. Don't yet know if the cases were in the tested negative group or in the vaccinated group.
"Lupiano eventually arrived at a single linking factor between himself, his wife and his sister: they each attended Colonia High School in Woodbridge in the 1990s"
In addition to the school, he and his sister share their parents genes. He and his wife lived in the same neighbourhood so they shared many other things too.