Biology for IGCSE & O level - Diseases And Immunity (Section 3 - No. 19)

How does personal hygiene help to control the spread of disease?

By stimulating the immune system.

By killing all pathogens in the environment.

By preventing the transmission of pathogens from one person to another.

By increasing the body's resistance to disease.

Personal hygiene prevents pathogens from entering the body and spreading to others