Simplify the following text for a Grade 14 native English-speaking person.
Original: Proteobacteria include a wide variety of pathogens , such as Escherichia coli , Salmonella , Vibrio , Helicobacter , and many other notable genera .
Simplified: They include a wide variety of pathogens , such as Escherichia , Salmonella , Vibrio , Helicobacter , and many other notable genera .