Shapes of bacteria

Spirochaetes
Spirochaetes are a group of spiral-shaped bacteria known for their unique corkscrew motion and their role in causing diseases such as syphilis and Lyme disease.
Cocci
Cocci are spherical bacteria that can occur singly, in pairs (diplococci), in chains (streptococci), or in clusters (staphylococci).


Bacilli
Bacilli are rod-shaped bacteria that can form spores and are known for causing diseases such as anthrax and tuberculosis.
Virus

Bacteriophage
Bacteriophages are viruses that infect and replicate within bacteria, often used in research and medical applications to combat bacterial infections.
Adenovirus
Adenoviruses are a group of viruses that can cause a range of illnesses, from mild respiratory infections to more severe conditions like gastroenteritis and conjunctivitis.


Coronavirus
Coronaviruses are a family of viruses that can cause illnesses ranging from the common cold to severe respiratory diseases such as COVID-19.