Anti-polio
SERIES TITLE: Sette G
Even though cases of poliomyelitis have diminished, some resistence against the vaccine need to be overcome: the lack of it is the cause of more than a hundred cases each year
SERIES TITLE: Sette G
Even though cases of poliomyelitis have diminished, some resistence against the vaccine need to be overcome: the lack of it is the cause of more than a hundred cases each year
