  We present the results from a survey, designed to investigate the accretion
process of massive young stellar objects (MYSOs) through near infrared narrow
band imaging using the H$_2$ $\nu$=1-0 S(1) transition filter. A sample of 353
Massive Young Stellar Object (MYSO) candidates was selected from the Red MSX
Source survey using photometric criteria at longer wavelengths (infrared and
submillimeter) and chosen with positions throughout the Galactic Plane. Our
survey was carried out at the SOAR Telescope in Chile and CFHT in Hawaii
covering both hemispheres. The data reveal that extended H$_2$ emission is a
good tracer of outflow activity, which is a signpost of accretion process on
young massive stars. Almost half of the sample exhibit extended H$_2$ emission
and 74 sources (21\%) have polar morphology, suggesting collimated outflows.
The polar-like structures are more likely to appear on radio-quiet sources,
indicating these structures occur during the pre-UCHII phase. We also found an
important fraction of sources associated with fluorescent H$_2$ diffuse
emission that could be due to a more evolved phase. The images also indicate
only $\sim$23\% (80) of the sample is associated with extant (young) stellar
clusters. These results support the scenario in which massive stars are formed
by accretion disks, since the merging of low mass stars would not produce
outflow structures.
