I totally understand - I'm not a virologist but I'm a scientist researching biology and it is still hard - so I totally understand and sympathize with the confusion over controversies and developing science and all that - what gets my blood boiling is folks like Wade who purposely twist the truth and outright lie in order to "win" an argument. Anyways - sorry for the soapboxing... thank you for reading and supporting Francesca - much appreciated. SD