POST 01118E : ORAL POLIO VACCINE COLOUR

POST 01118E : ORAL POLIO VACCINE COLOUR Follow-up on Post 01050E, 01058E, 01100E and 01107E 8 July 2007 ______________________________________ No other comment or reply were received on this topic. Thus [log in to unmask]">Jacqueline Fournier-[log in to unmask]">Caruana, [log in to unmask]">Hans [log in to unmask]">Everts and [log in to unmask]">Diana Chang[log in to unmask]"> Blanc jointly reiterate WHO's position. ______________________________________ 1) Colour variations have no impact on vaccine effectiveness. Colour is not an indicator of quality. 2) All OPV vaccines are supplied by pre-qualified producers and are approved by National Regulatory Authorities. Phenol red is a residue of vaccine production, that is a visual indicator of the correct cell multiplication, or their degeneration. Some producers, not all, add more in the formulation of the final product for the vaccine to have this pink colour that everybody knows. It happens that this colour turns yellow ; it is a well-known event, rare however ______________________________________________________________________________ All members of the TechNet21 e-Forum are invited to send comments on any posting or to use the forum to raise a new discussion or request technical information in relation to immunization services. The comments made in this forum are the sole responsibility of the writers and do not in any way mean that they are endorsed by any of the organizations and agencies to which the authors may belong. ______________________________________________________________________________ Visit the TECHNET21 Website at http://www.technet21.org You will find instructions to subscribe, a direct access to archives, links to reference documents and other features. ______________________________________________________________________________ To UNSUBSCRIBE, send a message to : [log in to unmask]">[log in to unmask] Leave the subject area BLANK In the message body, write unsubscribe TECHNET21E ______________________________________________________________________________ The World Health Organization and UNICEF support TechNet21. The TechNet21 e-Forum is a communication/information tool for generation of ideas on how to improve immunization services. It is moderated by Claude Letarte and is hosted in cooperation with the Centre de coopération internationale en santé et développement, Québec, Canada (www.ccisd.org ____________________________________________________________