That means of the reach is any delivery strategy that requires health facility staff to leave their facility to deliver system. Ideally a minimum of four contacts per year are required to fully immunize an infant. For some communities, access can only be provided irregularly, and may require mobile teams to provide outreach, which will involve resources beyond the health facility and district level. Outreach sessions, especially mobile teams, present opportunities to provide other interventions along with imagination.the strategy results in significantly more children being immunized, and this guide aims to enable many more health workers to employ the approach of this system.