"there may be subtle differences (between animals and humans) that we don't know about," klein said..
�long delays can put people under incredible stress at an already difficult time and could also mean that someone�s health could take a turn for the worse..
and parents who refuse to vaccinate their children should consider what they are doing to other young kids in their communities..
the report "correctly points out that there really was no playbook for dealing with what was an unprecedented health crisis," san diego mayor kevin faulconer said..