We visited 544 households with 953 eligible participants, of whom 88.04% (839/953) had been vaccinated during the campaign. Those aged 1–2 years were 20% (168/839), females were 49% (407/839). Among the caregivers 92% (499/544) were female, 55% (300/544) had no formal education, 47% (258/544) were unemployed. Wajir County had 93% (70/78) coverage while West Pokot County had 19% (17/92) of eligible children not vaccinated. About 3% (25/839) of the respondents experienced adverse events following immunization with fever 44 % (11/25) rash16% (4/25) and itch 8% (2/25) being common. Nearly 79% (660/839) were vaccinated at Fixed Temporary sites, 22% (170/839) and 2% (20/839) were vaccinated at Fixed Permanent site and Hard-to-reach areas. About 66% (311/468) of the caregivers were aware of the campaign before, while 32% (151/468) were aware during the campaign. Preferred sources of information were community mobilizers (40%, 185/467) and Health volunteers (CHVs) (32%, 154/469). Challenges noted were nomadic nature of communities, county vastness and inadequate team members during campaigns.