Simplify the following text for a Grade 11 native English-speaking person.
Original: Some epidemiologists work in the community , commonly in a public health\/health protection service and are at the forefront of investigating and combating disease outbreaks .
Simplified: Some epidemiologists work ` in the field ' ; i.e. , in the community , commonly in a public health\/health protection service and are often at the forefront of investigating and combating disease outbreaks .