What are 4 different kinds of phatogen?
Bacteria - single-celled organisms that can cause infections like strep throat and pneumonia.
Virus - genetic material surrounded by a protein coat that causes illnesses such as the flu and common cold.
Fungus - a type of organism that can cause infections like athlete's foot and yeast infections.
Parasite - an organism that lives on or inside another organism and can cause diseases like malaria and intestinal worms.