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# Long description

A schematic illustration shows examples of six pathogens with their size compared to other cells or substances. The size of the following is depicted in the illustration: Tapeworm (red tubular structure): 3 to 10 metres long. Human hair (a hair strand): 50 to 180 micrometres thick. Grain of salt (powder salt): 60 micrometres. Protozoa (oval-shaped) (for example, malaria): 1 to 20 micrometres. Fungi (green branched filaments with multiple nuclei) (for example, Candida albicans - thrush): 2.6 to 3.4 micrometres. Bacteria (for example, Escherichia coli): 1 to 3 micrometres. Virus (a red sphere) (for example, SARS-CoV-2): 0.1 to 0.5 micrometres. Prion (protein molecule): 0.002 to 0.010 micrometres.