RUSH Letter for CMSHS, HHIS, PES, MHS & MPNAG: Winners for the Best Implementer of the Dengue Vector Surveillance in NCR through the Ovilarvicidal (OL) Trap Program & Participants for the OL Trap Poster-Slogan Making Contest Posted on December 9, 2014 by MSM13 Leave a comment 1362. Winners for the Best Implementer of the Dengue Vector Surveillance in NCR through the Ovilarvicidal (OL) Trap Program & Participants for the OL Trap Poster-Slogan Making Contest Memorandum