Medically reviewed by Jane Kim, MD The common cold and diseases like influenza are caused by germs called viruses. These germs are infectious and can stay on surfaces and make you sick if they enter ...

A single bacterium consists of just one cell. Not all bacteria are harmful. There are different unicellular organisms and types of bacteria. Yeast are unicellular fungi. They are used by brewers ...

Babies born via C-section don't get bathed in good birth canal bacteria, but instead attain ... The composition of your microbiome can change at different points in your life, with the biggest ...

A single bacterium consists of just one cell. Not all bacteria are harmful. There are different unicellular organisms and types of bacteria. Yeast are unicellular fungi. They are used by brewers ...