No they do not
Some species can cause disease in humans
dysentary
1.Vorticella campanula2.Vorticella convallaria3.Vorticella microstoma
by getting in your bloodstreams
Malaria
Vorticella are unicellular protists.
Athletes foot
polio
Ticks are often harmful to humans. For instance, the sheep tick could cause Lyme disease in humans.
Babesiosis is a disease mainly caused by ticks. This disease is similar to malaria and can cause severe anemia.
viruses