What type of microorganisms are protozoa?

Protozoa are classified as single-celled organisms that are capable of causing infections in humans. These microorganisms belong to the kingdom Protista and are typically larger than bacteria. They can exist in various environments, including fresh and saltwater, soil, and as parasites within hosts. In the context of human health, certain protozoa can lead to infectious diseases, such as malaria, which is caused by the Plasmodium species, or giardiasis, caused by Giardia lamblia.

By understanding that protozoa are single-celled and can be pathogenic, one can appreciate their significance in sanitation and safety practices within esthetic environments, particularly concerning the potential for infections. This focus on microorganisms is essential for maintaining hygienic conditions in any esthetics-related practice.