Dallas Ebola victim's stepdaughter - who took him to hospital as he was 'vomiting wildly' - is given all clear to return to work as a NURSING ASSISTANT

PUBLIC HEALTH MEASURES
Even in the 14th century the health authorities
in northern Italy had established the importance
of a 40 day quarantine period, which became the
gold standard for continental Europe for the next
300 years. The 40 day quarantine was not
adopted in England until the 16th century and
even then it was changed to 30 days only to find
that this was completely ineffective, whereupon
this regulation was speedily rescinded.