Awareness about vaccine vial monitor at pulse polio booths.

All members present on booth, working on National Immunization Day during January and February, 2007 were interviewed by using predesigned and pretested questionnaires to assess their awareness regarding type of OPV and VVM in urban areas of Valsad district. Correct identification of trivalent OPV was highest (54.8%) among health staff members working at booths, but for monovalent OPV it was poor (38.7%). More than half (51.6%) of staff members interviewed had not heard of VVM. Awareness was very poor for VVM among those who have heard regarding its function, how to read VVM and when OPV should be discarded.