Assessing The Knowledge Of Health Workers (routine Immunization Officers) About Cold Chain System

CHAPTER ONE INTRODUCTION The cold chain is a science, a technology and a process. It is a science since it requires the understanding of the chemical and biological processes linked with perishability. It is a technology since it relies on physical means to insure appropriate temperature conditions along the supply chain. It is a process since a series of tasks must be performed to manufacture, prepare, store, transport and monitor temperature sensitive products. From a geographical perspective, the cold chain has global, regional and local impacts respectively. Global, Specialization enable t…