Which microbe is the smallest?

Microbes:

1. Microbes referred to microscopic, mostly unicellular organisms.
2. Microbes include bacteria, viruses, viroids, algae, etc.
3. Among all the microbes, viruses are the smallest.
4. Viruses are living only inside the host body and are non-living outside.
5. Viruses are pathogens and cause diseases in living organisms.
6. Viruses have the smallest size such as 0.02 microns.
7. Examples of viruses, Influenza, COVID 19, HIV, etc.