**2. Methodology**

The narrative review approach was used to draft this chapter. Information was retrieved from the internet-based search for original articles and reviews published between the years 2000 and 2021, using PubMed and Google scholar portals, and from textbooks. The keywords used for the literature search and inclusion criteria were 'control, diagnostics, exposure, soil-transmitted helminths, low-and middleincome countries, and personal protective equipment'. In-text references have been cited appropriately and full references are provided in the bibliography section.
