Response to the coronavirus disease 2019 pandemic of dental hygienists in South Korea-Part Ⅰ: Knowledge and practice of infection control.

Infection control knowledge and practice of clinical dental hygienists in South Korea was found to be vulnerable in the group of hygienists who are younger than 27 years old, working in dental clinics, and whose monthly income is less than under $2,000. Also, the factor that influences infection control practice the most was the degree of knowledge. Therefore, continuous infection control education and supplement targeting these vulnerable groups are necessary.